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 A334515 #15 May 09 2020 14:51:43 %S A334515 2,2,3,2,30,18,126,2,504,430,979,18,443,2198,6820,976,78812,7812, %T A334515 158080,142580,248493,122870,1630792,18,2777040,4511,81688176,868, %U A334515 463347935,5921860,1211061438,26636800,598772163,40012662,145710075,135322524,40583131393,535150200,132932362849,3936823600 %N A334515 Eventual period of a single cell in rule 75 cellular automaton in a cyclic universe of width n. %C A334515 _Bradley Klee_ computed a(1)-a(10). %D A334515 Bradley Klee, Posting to Math Fun Mailing List, Apr 26 2020 %Y A334515 Cf. A180001, A334496, A334499-A334514. %K A334515 nonn %O A334515 1,1 %A A334515 _N. J. A. Sloane_, May 05 2020 %E A334515 a(11)-a(14) from _Jinyuan Wang_, May 09 2020 %E A334515 More terms from _Bert Dobbelaere_, May 09 2020