OEIS stats

[Tanya Khovanova]

Hello Seqfans,

The best way to start the new year is to play with OEIS!

Here are my today's results:

The longest sequence is sequence A016176 of length 348.
3791 sequences has the most popular sequence length of 105.

Below is the number of sequences of given length.

1 9
2 67
3 295
4 1228
5 1464
6 1838
7 1904
8 2206
9 2252
10 2642
11 1889
12 2218
13 2384
14 2448
15 2485
16 2616
17 3080
18 3313
19 2764
20 3183
21 2955
22 2342
23 2103
24 2258
25 2184
26 1950
27 1604
28 1642
29 1435
30 1856
31 1622
32 1480
33 1427
34 1366
35 1310
36 1520
37 1221
38 1145
39 1388
40 1481
41 1378
42 1383
43 1143
44 1203
45 1772
46 1419
47 1621
48 1568
49 1391
50 1663
51 1502
52 1426
53 1413
54 1613
55 2189
56 1579
57 1378
58 1245
59 1104
60 1269
61 1108
62 812
63 947
64 781
65 605
66 1084
67 655
68 632
69 853
70 1135
71 797
72 1311
73 641
74 586
75 754
76 527
77 465
78 630
79 385
80 520
81 1521
82 270
83 273
84 424
85 311
86 291
87 369
88 315
89 246
90 799
91 322
92 292
93 283
94 223
95 218
96 261
97 227
98 274
99 2936
100 650
101 371
102 763
103 259
104 291
105 3791
106 56
107 24
108 124
109 8
110 20
111 44
112 12
113 11
114 13
115 10
116 4
117 8
118 6
119 10
120 29
121 12
122 4
123 2
124 5
125 4
126 2
127 4
128 1
129 1
130 1
131 3
132 2
133 1
134 0
135 0
136 1
137 0
138 0
139 0
140 0
141 1
142 0
143 1
144 0
145 0
146 0
147 0
148 3
149 0
150 0
151 0
152 0
153 1
154 0
155 0
156 0
157 2
158 0
159 0
160 0
161 0
162 0
163 0
164 0
165 0
166 0
167 0
168 0
169 0
170 0
171 0
172 0
173 0
174 0
175 0
176 0
177 0
178 0
179 0
180 1
181 0
182 0
183 0
184 0
185 0
186 1
187 0
188 0
189 0
190 0
191 0
192 1
193 0
194 0
195 0
196 0
197 0
198 0
199 2
200 2
201 0
202 0
203 0
204 0
205 0
206 0
207 0
208 0
209 0
210 0
211 0
212 0
213 0
214 0
215 0
216 0
217 0
218 0
219 0
220 0
221 0
222 0
223 0
224 0
225 0
226 0
227 0
228 0
229 0
230 0
231 0
232 1
233 0
234 1
235 0
236 0
237 0
238 0
239 0
240 0
241 0
242 0
243 0
244 1
245 0
246 0
247 1
248 0
249 0
250 0
251 0
252 0
253 0
254 0
255 0
256 0
257 0
258 0
259 0
260 0
261 0
262 0
263 0
264 0
265 0
266 0
267 0
268 0
269 0
270 0
271 0
272 0
273 0
274 0
275 0
276 0
277 0
278 0
279 0
280 0
281 0
282 0
283 0
284 0
285 0
286 0
287 0
288 0
289 0
290 0
291 0
292 0
293 0
294 0
295 0
296 0
297 0
298 0
299 0
300 0
301 0
302 0
303 0
304 0
305 0
306 0
307 0
308 0
309 0
310 0
311 0
312 0
313 0
314 0
315 0
316 0
317 0
318 0
319 0
320 0
321 0
322 0
323 0
324 0
325 0
326 0
327 0
328 0
329 0
330 0
331 0
332 0
333 0
334 0
335 0
336 0
337 0
338 0
339 0
340 0
341 0
342 0
343 0
344 0
345 0
346 0
347 0
348 1
349 0





Tanya,   It would be more interesting to include
in your table the numbers of terms in the b-files,
when they exist.  Because they are really more important
than the regular %STU etc lines, when the b-files exist.

There are 4700 odd b-files, and the 10 biggest have 
this many terms:

100001
100001
100002
100024
101630
107407
143072
300002
500001
500002

Neil



Just for fun, I took a snapshot of OEIS on Dec. 16 and counted the number
of sequences in which n or -n occurs for 0 <= n <= 10000.

You can view the graph at http://www.sspectra.com/math/OEIS_Count.gif

Because OEIS has only about the first 100 terms of each sequence, there are
of 2, such as 4096, are very common.  The two least common numbers are 8795
and 9935, which do not occur in any sequence in OEIS (yet).

Happy New Year!

Tony