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 A346938 #5 Aug 08 2021 08:37:37
%S A346938 1,6,69,812,10471,141702,1997687,28988856,430321563,6503342378,
%T A346938 99726673129,1547847703500,24269405074739,383846166714410,
%U A346938 6116574500850339,98106248277869040,1582638261961640246,25661404527359789034,417980115131315136399,6836064539918615002932
%N A346938 a(n) = Sum_{d|n} mu(n/d) * binomial(7*d,d) / (6*d+1).
%C A346938 Moebius transform of A002296.
%t A346938 Table[Sum[MoebiusMu[n/d] Binomial[7 d, d]/(6 d + 1), {d, Divisors[n]}], {n, 20}]
%Y A346938 Cf. A002296, A002996, A008683, A346925, A346935, A346936, A346937, A346939.
%K A346938 nonn
%O A346938 1,2
%A A346938 _Ilya Gutkovskiy_, Aug 08 2021