A340845 Denominators of coefficients in the expansion given in A340825 (see Comments at A340844).

2, 3, 36, 240, 1800, 945, 11760, 120960, 1360800, 259875, 109771200, 1556755200, 23610787200, 1489863375, 817296480000, 380007936000, 94479473088000, 1856156927625, 20062993991040000, 443497761907200000, 10244798300056320000, 60266321845104375

Offset

1,1

Comments

The n-th coefficient of the expansion is c_n = A340844(n)/a(n).

It seems that c_n*n*(n+1)! is an integer for all n > 0.

Links

Table of n, a(n) for n=1..22.

Example

1/2, -1/3, 13/36, -113/240, 1187/1800, ...

Crossrefs

Cf. A340745, A340824, A340825, A340844 (numerators), A340875.

Sequence in context: A064032 A118443 A355236 * A266758 A280539 A216145

Adjacent sequences: A340842 A340843 A340844 * A340846 A340847 A340848

Keyword

nonn,frac

Author

Jon E. Schoenfield, Jan 24 2021

Status

approved