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 A253562 #6 Jan 04 2015 22:56:59 %S A253562 1,2,3,4,8,5,30,7,6,17,122,12,498,68,38,11,2018,9,8130,47,155,278, %T A253562 32642,23,13,1130,10,192,130818,107,523778,16,632,4562,353,18,2096130, %U A253562 18338,2558,93,8386562,437,33550338,782,302,73538,134209538,57,39,24,10298,3162,536854530,14,1433,380,41330,294530,2147450882,212,8589869058,1178882,1227,22 %N A253562 Inverse permutation to A253561: a(n) = A252752(A122111(n)). %H A253562 Antti Karttunen, <a href="/A253562/b253562.txt">Table of n, a(n) for n = 1..512</a> %H A253562 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A253562 a(n) = A252752(A122111(n)). %o A253562 (Scheme) (define (A253562 n) (A252752 (A122111 n))) %Y A253562 Inverse: A253561. %Y A253562 Cf. A122111, A252752. %K A253562 nonn %O A253562 1,2 %A A253562 _Antti Karttunen_, Jan 03 2015