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 A261715 #8 Aug 29 2015 07:51:34 %S A261715 1,2,8,3,6,9,23,4,26,7,21,10,15,24,72,5,19,27,41,11,32,22,70,12,44,16, %T A261715 2498,25,39,73,2493,13,48,20,68,28,52,42,132,14,2496,33,88,29,58,71, %U A261715 2491,17,62,45,103,18,66,2499,2514,30,91,40,130,74,82,2494,2641 %N A261715 Putative inverse of conjectured permutation in A261702. %H A261715 Paul Tek, <a href="/A261715/b261715.txt">Table of n, a(n) for n = 1..10000</a> %H A261715 Paul Tek, <a href="/A261715/a261715.cpp.txt">C++ program for this sequence</a> %Y A261715 Cf. A261702. %K A261715 nonn,look %O A261715 1,2 %A A261715 _Paul Tek_, Aug 29 2015