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 A348254 #5 Oct 21 2021 07:45:03 %S A348254 1,3,6,11,51,58,69,1384,1397,3754,3773,6702,6731,84656,84693,89520, %T A348254 89563,91878,91931,173150,173211,192948,193019,524659,524738,865383, %U A348254 865472,876639,876740,890581,890688,904381,904494,918985,919116,1629115,1629254,1647255,1647406,1666931,1667094,1687929,1688102 %N A348254 Records in A348409. %Y A348254 Cf. A307720, A307730, A348246, A348409, A348249, A348252-A348256. %K A348254 nonn %O A348254 1,2 %A A348254 _N. J. A. Sloane_, Oct 21 2021