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 A137898 #10 Feb 27 2024 03:03:56 %S A137898 1,5,3,4,5,21,15,17,9,21,11,12,13,14,15,16,17,37,19,20,21,68,23,75,51, %T A137898 81,55,57,29,93,63,65,33,69,35,36,37,77,39,81,41,85,43,44,45,93,47,48 %N A137898 Limiting sequence when we start with positive integers (A000027) and at step n >= 1 add to the term at position n + a(n) the value of the term at position n+a(n)+1. %F A137898 Limiting sequence when we start with positive integers (A000027) and at step n >= 1 add to the term at position n + a(n) the value of the term at position n+a(n)+1. %Y A137898 Cf. A000027, A136119, A137319, A137417, A137418, A136259, A136272. %K A137898 easy,nonn %O A137898 1,2 %A A137898 _Ctibor O. Zizka_, Apr 30 2008 %E A137898 Entries corrected and extended by _Paolo P. Lava_, Mar 10 2009