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 A157339 #7 Aug 19 2022 14:17:39 %S A157339 5,6,5,15,5,6,5,19,5,6,5,15,5,6,5,43,5,6,5,15,5,6,5,19,5,6,5,15,5,6,5, %T A157339 44,5,6,5,15,5,6,5,19,5,6,5,15,5,6,5,43,5,6,5,15,5,6,5,19,5,6,5,15,5, %U A157339 6,5,47,5,6,5,15,5,6,5,19,5,6,5,15,5,6,5,43,5,6,5,15,5,6,5,19,5,6,5,15,5,6,5,44 %N A157339 Quadrisection A157334(4n+3). %C A157339 The sequence of the first differences of a quadrisection of A157276, that is A157276(4n+4)-A157276(4n), has the same first 15 terms as this sequence here, and then starts to differ. %Y A157339 Cf. A157276, A157334. %K A157339 nonn %O A157339 0,1 %A A157339 _Paul Curtz_, Feb 27 2009 %E A157339 Edited and extended by _R. J. Mathar_, Apr 10 2009