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 A246317 #7 Jun 14 2016 01:56:57 %S A246317 1,4,12,40,176,724,3276,14620,61044,250396,1012804,4076236,16344284, %T A246317 65471860,262071708,1048641260 %N A246317 A246316(2^n-1). %C A246317 Conjecture: Rules 332, 356, 364, 452, 460, 484, 492, 836, 844, 868, 876, 964, 972, 996 and 1004 also generate this sequence. - _Lars Blomberg_, Jun 14 2016 %Y A246317 Cf. A246316. %K A246317 nonn,more %O A246317 0,2 %A A246317 _N. J. A. Sloane_, Aug 27 2014 %E A246317 a(8)-a(15) from _Lars Blomberg_, Jun 14 2016