A346936 a(n) = Sum_{d|n} mu(n/d) * binomial(5*d,d) / (4*d+1).

1, 4, 34, 280, 2529, 23712, 231879, 2330160, 23950320, 250540836, 2658968129, 28558319744, 309831575759, 3390416555996, 37377257156716, 414741861215840, 4628362722856424, 51912988232308104, 584909606696793884, 6617078646710069720, 75134301594081157746, 855968478539048248916

Offset: 1

Author

Ilya Gutkovskiy, Aug 08 2021

Keywords

• nonn

Comments

Moebius transform of A002294.

Crossrefs

Cf. A002294, A002996, A008683, A346925, A346935, A346937, A346938, A346939.

Programs

Mathematica

Table[Sum[MoebiusMu[n/d] Binomial[5 d, d]/(4 d + 1), {d, Divisors[n]}], {n, 22}]