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 A358237 #11 Sep 01 2024 14:00:22 %S A358237 2,3,6,11,66,171,363,7227,66566,154451,685586,3279723,6441446,8503058, %T A358237 8916198,13155131,20611602,110313011,19833933891,72288388227, %U A358237 89064046098,179298892971,814860068418,1103556553011,3406132316043,6205240425026,30403655630403,206380232083602,666150525051666 %N A358237 Palindromes of the form k^2 + 2. %t A358237 Select[Range[0,26*10^6]^2+2,PalindromeQ] (* _Harvey P. Dale_, Sep 01 2024 *) %Y A358237 Cf. A059100, A358207, A070254, A002779. %K A358237 nonn,base %O A358237 1,1 %A A358237 _Robert Xiao_, Nov 04 2022