A000912 - OEIS

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

A000912 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`2`
`3`		`4`
`4`		`14`
`5`		`40`
`6`		`132`
`7`		`424`
`8`		`1430`
`9`		`4848`
`10`		`16796`
`11`		`58744`
`12`		`208012`
`13`		`742768`
`14`		`2674440`
`15`		`9694416`
`16`		`35357670`
`17`		`129643360`
`18`		`477638700`
`19`		`1767258328`
`20`		`6564120420`
`21`		`24466250224`
`22`		`91482563640`
`23`		`343059554864`
`24`		`1289904147324`
`25`		`4861946193440`
`26`		`18367353072152`

[1,0,2,4,14,40,132,424,1430,4848,16796,58744, 208012,742768,2674440,9694416,35357670,129643360, 477638700,1767258328,6564120420,24466250224, 91482563640,343059554864,1289904147324, 4861946193440,18367353072152]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)