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 A262429 #6 Sep 23 2015 16:39:06 %S A262429 1,5,2,3,4,6,8,7,9,10,11,12,13,14,15,16,17,18,20,19,22,24,21,26,23,25, %T A262429 29,28,27,30,31,32,34,33,36,39,35,37,38,40,41,42,43,44,46,45,48,50,47, %U A262429 49,52,51,54,53,55,56,57,59,58,60,61,62,63,65,64,67,69 %N A262429 Inverse permutation to A262411. %H A262429 Reinhard Zumkeller, <a href="/A262429/b262429.txt">Table of n, a(n) for n = 1..10000</a> %H A262429 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %o A262429 (Haskell) %o A262429 import Data.List (elemIndex); import Data.Maybe (fromJust) %o A262429 a262429 = (+ 1) . fromJust . (`elemIndex` a262411_list) %Y A262429 Cf. A262411, A262435 (fixed points). %K A262429 nonn %O A262429 1,2 %A A262429 _Reinhard Zumkeller_, Sep 22 2015