A005219 - OEIS

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

A005219 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`0`
`6`		`2`
`7`		`4`
`8`		`15`
`9`		`36`
`10`		`108`
`11`		`276`
`12`		`771`
`13`		`2044`
`14`		`5622`
`15`		`15204`
`16`		`41835`
`17`		`114708`
`18`		`317382`
`19`		`879008`
`20`		`2447951`
`21`		`6833084`
`22`		`19146910`
`23`		`53786076`
`24`		`151537847`
`25`		`427946916`
`26`		`1211440440`
`27`		`3436543336`
`28`		`9768382171`
`29`		`27817787344`
`30`		`79356481542`

[0,0,0,0,0,2,4,15,36,108,276,771,2044,5622,15204, 41835,114708,317382,879008,2447951,6833084, 19146910,53786076,151537847,427946916,1211440440, 3436543336,9768382171,27817787344,79356481542]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)