A006153 - OEIS

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

A006153 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`4`
`3`		`21`
`4`		`148`
`5`		`1305`
`6`		`13806`
`7`		`170401`
`8`		`2403640`
`9`		`38143377`
`10`		`672552730`
`11`		`13044463641`
`12`		`276003553860`
`13`		`6326524990825`
`14`		`156171026562838`
`15`		`4130464801497105`
`16`		`116526877671782896`
`17`		`3492868475952497313`
`18`		`110856698175372359346`
`19`		`3713836169709782989993`
`20`		`130966414749485504586940`

[1,1,4,21,148,1305,13806,170401,2403640,38143377, 672552730,13044463641,276003553860,6326524990825, 156171026562838,4130464801497105, 116526877671782896,3492868475952497313, 110856698175372359346,3713836169709782989993, 130966414749485504586940]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)