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 A255479 #21 Mar 12 2015 14:03:35 %S A255479 1,2,3,4,10,5,13,6,7,8,21,9,24,11,12,16,31,14,38,18,15,23,43,20,30,22, %T A255479 17,25,51,28,59,27,19,29,32,37,67,36,26,34,78,35,81,39,42,41,90,44,52, %U A255479 46,33,48,101,47,58,50,40,49,108,55,119,57,54,64,60,63,131,66,45,62,136,68 %N A255479 Inverse permutation to A255582. %C A255479 The differences |a(n)-A064664(n)| seem surprisingly small (see A255482). %C A255479 About the definition: the map n -> A255582(n) is an element of the group of all permutations of the positive integers; this is the inverse of that permutation. %H A255479 Ray Chandler, <a href="/A255479/b255479.txt">Table of n, a(n) for n = 1..10000</a> %H A255479 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %o A255479 (Haskell) %o A255479 import Data.List (elemIndex); import Data.Maybe (fromJust) %o A255479 a255479 = (+ 1) . fromJust. (`elemIndex` a255582_list) %o A255479 -- _Reinhard Zumkeller_, Mar 10 2015 %Y A255479 Cf. A098550, A255582, A064413, A064664, A255482. %Y A255479 Cf. A098551, A255940. %K A255479 nonn %O A255479 1,2 %A A255479 _N. J. A. Sloane_, Feb 27 2015