A000166 - OEIS

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

A000166 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`2`
`4`		`9`
`5`		`44`
`6`		`265`
`7`		`1854`
`8`		`14833`
`9`		`133496`
`10`		`1334961`
`11`		`14684570`
`12`		`176214841`
`13`		`2290792932`
`14`		`32071101049`
`15`		`481066515734`
`16`		`7697064251745`
`17`		`130850092279664`
`18`		`2355301661033953`
`19`		`44750731559645106`
`20`		`895014631192902121`
`21`		`18795307255050944540`
`22`		`413496759611120779881`
`23`		`9510425471055777937262`

[1,0,1,2,9,44,265,1854,14833,133496,1334961, 14684570,176214841,2290792932,32071101049, 481066515734,7697064251745,130850092279664, 2355301661033953,44750731559645106, 895014631192902121,18795307255050944540, 413496759611120779881,9510425471055777937262]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 7 18:53 EDT 2024. Contains 372313 sequences. (Running on oeis4.)