A056281 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A056281 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`1`
`6`		`15`
`7`		`140`
`8`		`1050`
`9`		`6951`
`10`		`42524`
`11`		`246730`
`12`		`1379385`
`13`		`7508501`
`14`		`40074895`
`15`		`210766919`
`16`		`1096189500`
`17`		`5652751651`
`18`		`28958088579`
`19`		`147589284710`
`20`		`749206047975`
`21`		`3791262568261`
`22`		`19137821665325`
`23`		`96416888184100`

[0,0,0,0,1,15,140,1050,6951,42524,246730,1379385, 7508501,40074895,210766919,1096189500,5652751651, 28958088579,147589284710,749206047975, 3791262568261,19137821665325,96416888184100]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 07:11 EDT 2024. Contains 371782 sequences. (Running on oeis4.)