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 A238019 #12 Feb 25 2014 13:34:49
%S A238019 1,1,1,1,1,1,1,213,237,61,1,7534,289,328,107,1291,787,23669,26237,
%T A238019 1001,2563,52781,101705,22344,9952,68955,1169,278,225448,187013,
%U A238019 140090,2785328,5754090,622017,531034,422605,857311,502981,468270,855421,38278372,1552808
%N A238019 The first position of the first cycle of sequence {b_k}={b_k}(n) in A237671.
%C A238019 Is a(12) the last 1 in this sequence?
%Y A238019 Cf. A237568, A237671.
%K A238019 nonn,base
%O A238019 2,8
%A A238019 _Vladimir Shevelev_ and _Peter J. C. Moses_, Feb 17 2014