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 A107313 #3 Mar 30 2012 17:26:16
%S A107313 1,9,18,52,94,121,144,148,163,169,522,526,925,927,961,982,1042,1062,
%T A107313 1089,1251,1273,1297,1405,1426,1656,1674,1828,1843,1861,5202,5203,
%U A107313 5209,5221,5224,5227,5265,9022,9049,9082,9235,9295,9423,9468,9481,9631,9657
%N A107313 Odd squares written backwards and sorted.
%C A107313 A074895 Primes written backwards and sorted
%t A107313 Sort[Table[FromDigits[Reverse[IntegerDigits[n^2]]], {n, 1, 99, 2}]]
%Y A107313 Cf. A074895.
%K A107313 nonn,base
%O A107313 1,2
%A A107313 _Zak Seidov_, May 21 2005