A019251 - OEIS

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

A019251 as a simple table

`n`		`a(n)`
`3`		`0`
`4`		`0`
`5`		`4`
`6`		`6`
`7`		`7`
`8`		`21`
`9`		`46`
`10`		`103`
`11`		`260`
`12`		`595`
`13`		`1407`
`14`		`3705`
`15`		`9452`
`16`		`23492`
`17`		`60034`
`18`		`155159`
`19`		`400720`
`20`		`1035245`
`21`		`2690605`
`22`		`7029599`
`23`		`18420150`
`24`		`48439234`
`25`		`127951484`
`26`		`339072130`
`27`		`901525188`
`28`		`2405217058`
`29`		`6435364083`
`30`		`17262812726`
`31`		`46426074473`

[0,0,4,6,7,21,46,103,260,595,1407,3705,9452,23492, 60034,155159,400720,1035245,2690605,7029599, 18420150,48439234,127951484,339072130,901525188, 2405217058,6435364083,17262812726,46426074473]

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 14 13:09 EDT 2024. Contains 374318 sequences. (Running on oeis4.)