A289061 a(n) = 2 * (A288851(n) - 12).

984, 286752, 102360024, 41113157376, 17612599690200, 7859501322760224, 3607454891819189208, 1690291743695465539584, 804566332578533745648600, 387754701670974543569133600, 188763097395728376240220054488

Offset: 1

Author

Seiichi Manyama, Jun 23 2017

Keywords

• nonn

Links

• Seiichi Manyama, Table of n, a(n) for n = 1..367

Crossrefs

Related to E_{k+2}/E_k: A288995 (k=2), A192731 (k=4), this sequence (k=6).

Cf. A008683, A288840 (E_8*E_6), A288851.

Cf. A289063.

Formula

a(n) = (1/n) * Sum_{d|n} A008683(n/d) * A288840(d).

a(n) ~ 2*exp(2*Pi*n) / n. - Vaclav Kotesovec, Jun 03 2018