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 A287433 #5 May 26 2017 21:16:32 %S A287433 1,2,3,4,25,5,49,6,9,7,121,8,169,50,10,16,289,11,361,17,12,122,529,13, %T A287433 26,170,14,18,841,15,961,19,123,290,27,20,1369,362,171,21,1681,36, %U A287433 1849,22,28,530,2209,23,51,29,291,24,2809,37,30,52,363,842,3481,31 %N A287433 Inverse permutation to A284038. %C A287433 a(n) <= n^2 for any n > 0. %H A287433 Rémy Sigrist, <a href="/A287433/b287433.txt">Table of n, a(n) for n = 1..10000</a> %H A287433 Rémy Sigrist, <a href="/A287433/a287433.txt">C program for A287433</a> %e A287433 A284038(121) = 11, hence a(11) = 121. %Y A287433 Cf. A284038. %K A287433 nonn %O A287433 1,2 %A A287433 _Rémy Sigrist_, May 25 2017