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 A091419 #11 Sep 29 2019 03:10:44 %S A091419 1,1,4,1,9,1,16,9,4,25,1,36,9,9,25,1,64,9,81,9,100,25,121,4,1,144,9, %T A091419 81,169,196,9,25,225,121,9,1,256,16,289,9,64,81,25,169,361,9,400,25, %U A091419 441,225,484,121,9,1,529,576,289,4,625,9,81,25,676,169,361,144,729,784,9 %N A091419 Squares arising in A089653. %H A091419 Amiram Eldar, <a href="/A091419/b091419.txt">Table of n, a(n) for n = 1..10000</a> %F A091419 a(n) = A007947(A089653(n)) - 1. - _Amiram Eldar_, Sep 29 2019 %Y A091419 A091420 gives square roots. %Y A091419 Cf. A007947. %K A091419 nonn %O A091419 1,3 %A A091419 _Ray Chandler_, Jan 05 2004