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 A266192 #7 Jan 02 2016 04:09:27 %S A266192 1,2,3,5,14,4,6,8,23,17,9,7,89,16,10,11,29,26,25,20,41,12,43,13,287, %T A266192 92,27,19,134,37,22,38,35,32,45,53,77,28,15,56,59,44,39,33,128,46,31, %U A266192 40,329,290,34,95,122,30,52,67,119,137,18,60,188,64,24,71,98,86,21,401,233,48,51,83,80,437,54,69,257,72,133,62,1115,146,166,47,374,42 %N A266192 a(n) = index of n in A266191 or 0 if n is not present in that sequence. %C A266192 If A266191 is really a permutation of natural numbers, then this sequence is also, and no hypothetical zero-values are ever needed. %H A266192 Antti Karttunen, <a href="/A266192/b266192.txt">Table of n, a(n) for n = 1..11257</a> %H A266192 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %o A266192 (Scheme, with code for A266191 defined with defineperm1-macro also required) %o A266192 (define (A266192 n) (A266191 (- n))) ;; This returns inverse values of A266191 from its hidden cache. %Y A266192 Inverse: A266191. %K A266192 nonn,base %O A266192 1,2 %A A266192 _Antti Karttunen_, Dec 23 2015