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 A253552 #10 Feb 01 2015 13:20:07 %S A253552 1,3,2,6,4,5,7,10,11,8,16,9,37,12,29,15,22,17,46,13,106,23,67,14,301, %T A253552 47,154,18,352,38,121,21,56,30,92,24,211,57,191,19,596,122,436,31,991, %U A253552 80,277,20,1177,327,1226,58,2776,173,631,25,7751,380,1432,48,3241,138,497,28,79,68,232,39,529,107,379,32,1486,233,862,69,1954,212,781,26 %N A253552 Permutation of natural numbers: a(n) = A252752(A005940(n+1)) - 1. %H A253552 Antti Karttunen, <a href="/A253552/b253552.txt">Table of n, a(n) for n = 1..8192</a> %H A253552 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A253552 a(n) = A252752(A005940(n+1)) - 1. %o A253552 (Scheme) (define (A253552 n) (+ -1 (A252752 (A005940 (+ 1 n))))) %Y A253552 Inverse: A253551. %Y A253552 Cf. A005940, A252752. %Y A253552 Differs from A249725 for the first time at n=13, where a(13) = 37, while A249725(13) = 22. %Y A253552 Cf. also A243499 & A253563 (for similar scatterplots). %K A253552 nonn,look %O A253552 1,2 %A A253552 _Antti Karttunen_, Jan 03 2015