This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A367610 #13 Dec 11 2023 23:09:52 %S A367610 11,22,33,44,55,66,77,88,99,11,11,12,13,14,15,16,17,18,19,22,21,22,23, %T A367610 24,25,26,27,28,29,33,31,32,33,34,35,36,37,38,39,44,41,42,43,44,45,46, %U A367610 47,48,49,55,51,52,53,54,55,56,57,58,59,66,61,62,63,64,65,66,67,68,69,77,71,72,73,74,75,76,77,78,79 %N A367610 Comma transform of A367362. %C A367610 This is the second-order comma transform of the nonnegative integers. %C A367610 See A367360 for further information. %H A367610 N. J. A. Sloane, <a href="/A367610/b367610.txt">Table of n, a(n) for n = 1..9999</a> %o A367610 (Python) %o A367610 from itertools import count, islice, pairwise %o A367610 def S(): yield from (str(i) for i in count(0)) %o A367610 def C(): yield from (str(int(t[-1]+u[0])) for t, u in pairwise(S())) %o A367610 def a(): yield from (int(t[-1]+u[0]) for t, u in pairwise(C())) %o A367610 print(list(islice(a(), 80))) # _Michael S. Branicky_, Dec 11 2023 %Y A367610 Cf. A367360, A367362. %K A367610 nonn,base,look %O A367610 1,1 %A A367610 _N. J. A. Sloane_, Dec 11 2023