[seqfan] Re: A004143 From the powers that be
Don Reble
djr at nk.ca
Tue Dec 22 02:49:52 CET 2015
> The sequence of values that I get is,
> 0, 1, 2, 5, 10, 40, 40, 105, 5627, 14501, 330861, 658110, 897229.
> a(8) = 105 rather than the 106 given in the OEIS and in Eggleton...
> My chain of powers for this case runs:
> 2^105 > 3^66 > 5^45 > 7^37 > 11^30 > 13^28 > 17^25 > 19^24,
> I would quite like an independent verification...
Ok.
2: 1 0
3: 2 1 0
4: 5 3 2 1
5: 10 6 4 3 2
6: 40 25 17 14 11 10
7: 40 25 17 14 11 10 9
8: 105 66 45 37 30 28 25 24
9: 5627 3550 2423 2004 1626 1520 1376 1324 1243
10: 14501 9149 6245 5165 4191 3918 3547 3413 3205 2984
11: 330861 208750 142494 117855 95640 89411 80945 77887 73141 68106
66783
12: 658110 415221 283432 234423 190236 177846 161006 154924 145484
135469 132838 126329
13: 897229 566088 386415 319599 259357 242465 219507 211215 198345
184691 181104 172230 167469
---
Today's puzzle: what's this,
1 5 13 15 67 389 389 19805 19805 269693 1558103
and why are all the terms odd?
--
Don Reble djr at nk.ca
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