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 A269372 #5 Mar 06 2016 23:23:53 %S A269372 0,2,6,4,18,10,8,16,12,22,38,28,14,34,20,40,60,46,26,52,24,58,80,64, %T A269372 30,70,44,76,102,82,32,88,36,94,122,100,42,106,56,112,144,118,48,124, %U A269372 54,130,164,136,50,142,62,148,186,154,84,160,96,166,206,172,90,178,66,184,228,190,68,196,72,202,248,208,74 %N A269372 Permutation of even numbers: a(n) = A269369(n+1) - 1. %H A269372 Antti Karttunen, <a href="/A269372/b269372.txt">Table of n, a(n) for n = 0..11011</a> %F A269372 a(n) = A269369(1+n) - 1. %o A269372 (Scheme) (define (A269372 n) (- (A269369 (+ 1 n)) 1)) %Y A269372 Cf. A269369, A269374. %Y A269372 Cf. also A253886, A269382. %K A269372 nonn %O A269372 0,2 %A A269372 _Antti Karttunen_, Mar 01 2016