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 A353240 #18 Nov 04 2023 12:28:27 %S A353240 1,3,6,7,11,13,15,26,22,15,27,30,29,31,46,39,31,57,53,31,47,55,59,61, %T A353240 55,47,61,63,79,86,63,107,91,63,103,91,63,109,95,119,123,95,103,63,95, %U A353240 111,124,119,127,216,157,127,227,159,127,227,175,127,214,174,111 %N A353240 a(0) = 1; for n > 0, a(n) = A109812(n) + A109812(n+1). %H A353240 N. J. A. Sloane, <a href="/A353240/b353240.txt">Table of n, a(n) for n = 0..20000</a> (first 10000 terms from Rémy Sigrist) %H A353240 Rémy Sigrist, <a href="/A353240/a353240.txt">C++ program</a>. %e A353240 a(7) = A109812(7) + A109812(8) = 10 + 16 = 26. %o A353240 (C++) See Links section. %Y A353240 Cf. A109812, A353241. %K A353240 nonn %O A353240 0,2 %A A353240 _Rémy Sigrist_, Apr 08 2022