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 A061490 #8 Aug 17 2024 22:42:42 %S A061490 1,2,3,19,166,8269,11568181 %N A061490 Smallest number which when iterated n times under A003285 gives a square. %C A061490 Smallest m such that A003285(A003285(..(m))) = square with n iterations. %e A061490 A003285(A003285(3))=1, 3 is the smallest number requiring 2 iterations to reach a square number, so a(2)=3. %Y A061490 Cf. A003285. %K A061490 more,nonn %O A061490 0,2 %A A061490 _Naohiro Nomoto_, Nov 08 2001 %E A061490 a(6) from _Sean A. Irvine_, Feb 18 2023