A091486 - OEIS

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

A091486 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`3`
`4`		`7`
`5`		`21`
`6`		`60`
`7`		`190`
`8`		`600`
`9`		`1977`
`10`		`6589`
`11`		`22408`
`12`		`77050`
`13`		`268178`
`14`		`941599`
`15`		`3333585`
`16`		`11882427`
`17`		`42615480`
`18`		`153653039`
`19`		`556664752`
`20`		`2025330509`
`21`		`7397242875`
`22`		`27111563026`
`23`		`99681629658`
`24`		`367563272278`
`25`		`1358945378906`
`26`		`5036549490009`
`27`		`18708739990129`
`28`		`69640873691941`

[1,1,3,7,21,60,190,600,1977,6589,22408,77050, 268178,941599,3333585,11882427,42615480,153653039, 556664752,2025330509,7397242875,27111563026, 99681629658,367563272278,1358945378906, 5036549490009,18708739990129,69640873691941]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 19:31 EDT 2024. Contains 371962 sequences. (Running on oeis4.)