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 A249426 #11 Dec 12 2016 09:01:59 %S A249426 0,1,3,5,9,11,15,17,21,27,29,35,39,41,45,51,57,59,62,65,69,71,77,79, %T A249426 81,83,87,89,95,99,101,104,105,107,111,118,125,129,131,135,137,143, %U A249426 147,149,153,155,159,161,164,165,167,171,177,179,181,189,191,194,195,197,199,207,209,219,221,225,227,231,237,239,249,255 %N A249426 Record values in A249150. %H A249426 Antti Karttunen, <a href="/A249426/b249426.txt">Table of n, a(n) for n = 1..999</a> %F A249426 a(n) = A249150(A249425(n)). %F A249426 a(n) = A249427(n) - 1. %o A249426 (Scheme) (define (A249426 n) (A249150 (A249425 n))) %Y A249426 One less than A249427. %Y A249426 Cf. A249150, A249425. %Y A249426 Differs from A040976 a(n) = prime(n) - 2 for the first time at n=19, where a(n) = 62, while A040976(19) = 65. And larger terms differs only a few times. %K A249426 nonn %O A249426 1,3 %A A249426 _Antti Karttunen_, Oct 28 2014