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%I #4 Aug 08 2021 08:37:42
%S 1,7,91,1232,18277,285285,4638347,77650784,1329890613,23190011435,
%T 410333440535,7349042707872,132969010888279,2426870701777445,
%U 44627576949345735,826044435331747776,15378186970730687399,287756293702214647875,5409093674555090316299,102094541350713952736608
%N a(n) = Sum_{d|n} mu(n/d) * binomial(8*d,d) / (7*d+1).
%C Moebius transform of A007556.
%t Table[Sum[MoebiusMu[n/d] Binomial[8 d, d]/(7 d + 1), {d, Divisors[n]}], {n, 20}]
%Y Cf. A002996, A007556, A008683, A346925, A346935, A346936, A346937, A346938.
%K nonn
%O 1,2
%A _Ilya Gutkovskiy_, Aug 08 2021
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