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 A348255 #5 Oct 21 2021 07:45:22 %S A348255 1,2,3,4,5,10,11,20,24,52,53,116,172,371,2662,3226,4800,9546,9804, %T A348255 14171,69148,71863,325494,333873,698509,2262261,15387377,40004428, %U A348255 40813283,64314104,550623089,847235953,897871194,1259250335 %N A348255 Records in A348249. %Y A348255 Cf. A307720, A307730, A348246, A348409, A348249, A348252-A348256. %K A348255 nonn %O A348255 1,2 %A A348255 _N. J. A. Sloane_, Oct 21 2021