A055227 - OEIS

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

A055227 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`5`
`5`		`11`
`6`		`27`
`7`		`71`
`8`		`201`
`9`		`602`
`10`		`1905`
`11`		`6318`
`12`		`21886`
`13`		`78911`
`14`		`295260`
`15`		`1143536`
`16`		`4574144`
`17`		`18859677`
`18`		`80014834`
`19`		`348776577`
`20`		`1559776269`
`21`		`7147792818`
`22`		`33526120082`
`23`		`160785623545`
`24`		`787685471323`
`25`		`3938427356615`
`26`		`20082117944246`
`27`		`104349745809074`
`28`		`552166953567228`

[1,1,1,2,5,11,27,71,201,602,1905,6318,21886,78911, 295260,1143536,4574144,18859677,80014834, 348776577,1559776269,7147792818,33526120082, 160785623545,787685471323,3938427356615, 20082117944246,104349745809074,552166953567228]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)