[seqfan] Another variation with a vertical cut
Eric Angelini
Eric.Angelini at kntv.be
Wed Jul 2 17:27:05 CEST 2014
Hello SeqFans,
Could someone please check? And comment -- if of interest?
Many thanks! I guess this is a nice (?) variation on the
recent https://oeis.org/A243357
> Lexicographically earliest sequence with property that
if a vertical line is drawn between any pair of adjacent
digits p and q, the number Z formed by the p digits to
the left of the line is divisible by p.
S = 1,2,3,11,5,6,4,8,12,13,15,21,22,24,17,16,25,19,7,23,27,...
Example:
a) draw a line between 6 and 4, for instance -- thus p = 6:
S = 1,2,3,11,5,6|,4,
b) concatenate the last 6 digits before the line (to get Z):
Z = 231156
c) Z/p is an integer (indeed, Z/6 = 38526)
We have here (if I'm not wrong):
Z / p = integer (Z ends in p and has digit-length p)
1 / 1 = 1
12 / 2 = 6
123 / 3 = 41
1 / 1 = 1
1 / 1 = 1
23115 / 5 = 4623
231156 / 6 = 38526
1564 / 4 = 391
23115648 / 8 = 2889456
1 / 1 = 1
12 / 2 = 6
1 / 1 = 1
213 / 3 = 71
1 / 1 = 1
21315 / 5 = 4263
52 / 2 = 26
1 / 1 = 1
12 / 2 = 6
22 / 2 = 11
22 / 2 = 11
2224 / 4 = 556
1 / 1 = 1
1222417 / 7 = 174631
1 / 1 = 1
241716 / 6 = 40286
62 / 2 = 31
71625 / 5 = 14325
1 / 1 = 1
417162519 / 9 = 46351391
1625197 / 7 = 232171
72 / 2 = 36
723 / 3 = 241
32 / 2 = 16
1972327 / 7 = 281761
...
S is infinite, of course, as it can always be extended
with an integer (not yet present) having only 1's.
Best,
É.
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