A020044 - OEIS

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

A020044 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`1`
`4`		`3`
`5`		`15`
`6`		`80`
`7`		`506`
`8`		`3710`
`9`		`30920`
`10`		`288591`
`11`		`2982109`
`12`		`33797241`
`13`		`416832633`
`14`		`5557768440`
`15`		`79661347641`
`16`		`1221473997164`
`17`		`19950741953682`
`18`		`345812860530488`
`19`		`6339902443058941`
`20`		`122571447232472866`
`21`		`2492286093726948268`

[1,0,0,1,3,15,80,506,3710,30920,288591,2982109, 33797241,416832633,5557768440,79661347641, 1221473997164,19950741953682,345812860530488, 6339902443058941,122571447232472866, 2492286093726948268]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)