A346937 a(n) = Sum_{d|n} mu(n/d) * binomial(6*d,d) / (5*d+1).

1, 5, 50, 500, 5480, 62776, 749397, 9203128, 115607259, 1478308780, 19180049927, 251857056364, 3340843549854, 44700484300317, 602574657421585, 8175951649914160, 111572030260242089, 1530312970224714489, 21085148778264281864, 291705220703240850760, 4050527291832419432577

Offset

1,2

Comments

Moebius transform of A002295.

Links

Table of n, a(n) for n=1..21.

Mathematica

Table[Sum[MoebiusMu[n/d] Binomial[6 d, d]/(5 d + 1), {d, Divisors[n]}], {n, 21}]

Crossrefs

Cf. A002295, A002996, A008683, A346925, A346935, A346936, A346938, A346939.

Sequence in context: A136910 A267663 A093143 * A077330 A113330 A079157

Adjacent sequences: A346934 A346935 A346936 * A346938 A346939 A346940

Keyword

nonn

Author

Ilya Gutkovskiy, Aug 08 2021

Status

approved