A005817 - OEIS

The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.

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

A005817 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`10`
`5`		`25`
`6`		`70`
`7`		`196`
`8`		`588`
`9`		`1764`
`10`		`5544`
`11`		`17424`
`12`		`56628`
`13`		`184041`
`14`		`613470`
`15`		`2044900`
`16`		`6952660`
`17`		`23639044`
`18`		`81662152`
`19`		`282105616`
`20`		`987369656`
`21`		`3455793796`
`22`		`12228193432`
`23`		`43268992144`
`24`		`154532114800`
`25`		`551900410000`
`26`		`1986841476000`
`27`		`7152629313600`

[1,1,2,4,10,25,70,196,588,1764,5544,17424,56628, 184041,613470,2044900,6952660,23639044,81662152, 282105616,987369656,3455793796,12228193432, 43268992144,154532114800,551900410000, 1986841476000,7152629313600]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 12 18:22 EDT 2024. Contains 372494 sequences. (Running on oeis4.)