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 A272465 #19 Jun 03 2025 11:27:54 %S A272465 1,2,4,7,12,19,29,43,64,95,142,211,317,480,726,1096,1644,2458,3669, %T A272465 5480,8204,12327,18628,28284,43141,66067,101609,156823,242640,376282, %U A272465 584667,910022,1418818,2214963,3461469,5414729,8477946,13286504,20840758,32716407,51395904 %N A272465 Indices n such that A272464(n)=1. %C A272465 It appears that a(n)/a(n-1) converges to 3/2. %H A272465 Rémy Sigrist, <a href="/A272465/a272465.txt">C program for A272465</a> %o A272465 (C) // See Links section. %Y A272465 Cf. A272464. %K A272465 nonn %O A272465 1,2 %A A272465 _Max Barrentine_, Apr 30 2016 %E A272465 More terms from _Rémy Sigrist_, Jul 02 2021