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 A249423 #12 Jul 18 2024 00:08:24
%S A249423 0,35,39,62,79,83,89,104,107,131,143,149,153,159,164,167,175,179,181,
%T A249423 194,197,199,207,209,219,259,263,269,272,274,279,285,287,296,299,305,
%U A249423 307,311,314,319,329,339,356,359,363,373,377,379,384,389,391,395,399,407,415,417,419,424,428,431,441,449,455,461,467,475,489,512
%N A249423 Integers n such that A249150(n) = n; integers n such that A249151(n) = n+1.
%C A249423 Integers n such that {product of elements on row n of Pascal's triangle} is divisible by (n+1)! but not by (n+2)!
%H A249423 Antti Karttunen, <a href="/A249423/b249423.txt">Table of n, a(n) for n = 1..732</a>
%o A249423 (Scheme, with _Antti Karttunen_'s IntSeq-library)
%o A249423 (define A249423 (FIXED-POINTS 1 0 A249150))
%Y A249423 Subsequence of A249434 and of A249429; it differs from the latter for the first time at n=17, where a(17) = 175 > 174 = A249429(17).
%Y A249423 Cf. A000142, A001142, A007318, A249150, A249151, A249424, A249425, A249426.
%K A249423 nonn
%O A249423 1,2
%A A249423 _Antti Karttunen_, Oct 28 2014