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 A322773 #11 Aug 06 2021 15:01:48 %S A322773 5,18,70,299,1393,7023,38043,220054,1352082,8784991,60125371, %T A322773 432001747,3248914361,25508188118,208592396802,1772921926183, %U A322773 15632838989393,142759592985079,1348095912827295,13145321614286610,132188675368994446,1369216940917868547 %N A322773 Column 2 of array in A322770. %H A322773 Alois P. Heinz, <a href="/A322773/b322773.txt">Table of n, a(n) for n = 0..572</a> %Y A322773 Cf. A322764, A322770. %Y A322773 Column k=2 of A346517. %K A322773 nonn %O A322773 0,1 %A A322773 _N. J. A. Sloane_, Dec 30 2018