A057151 - OEIS

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

A057151 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`4`
`5`		`8`
`6`		`18`
`7`		`41`
`8`		`102`
`9`		`252`
`10`		`666`
`11`		`1789`
`12`		`5031`
`13`		`14486`
`14`		`43280`
`15`		`132777`
`16`		`420267`
`17`		`1366307`
`18`		`4566966`
`19`		`15661086`
`20`		`55081118`
`21`		`198425478`
`22`		`731661754`
`23`		`2758808581`
`24`		`10629386376`
`25`		`41814350148`
`26`		`167830018952`
`27`		`686822393793`
`28`		`2864024856054`
`29`		`12162059027416`
`30`		`52564545391789`

[1,1,2,4,8,18,41,102,252,666,1789,5031,14486, 43280,132777,420267,1366307,4566966,15661086, 55081118,198425478,731661754,2758808581, 10629386376,41814350148,167830018952,686822393793, 2864024856054,12162059027416,52564545391789]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 16 00:00 EDT 2024. Contains 371696 sequences. (Running on oeis4.)