A267344 - OEIS

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

A267344 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`12`
`5`		`45`
`6`		`135`
`7`		`388`
`8`		`1220`
`9`		`5401`
`10`		`27146`
`11`		`125333`
`12`		`515897`
`13`		`2010472`
`14`		`8064508`
`15`		`34936670`
`16`		`159444254`
`17`		`725890833`
`18`		`3205348045`
`19`		`13816812300`
`20`		`59601118346`
`21`		`262631332138`
`22`		`1183293213009`
`23`		`5373170070242`
`24`		`24253891624959`
`25`		`108483481246313`

[1,1,2,12,45,135,388,1220,5401,27146,125333, 515897,2010472,8064508,34936670,159444254, 725890833,3205348045,13816812300,59601118346, 262631332138,1183293213009,5373170070242, 24253891624959,108483481246313]

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 21 19:45 EDT 2024. Contains 375353 sequences. (Running on oeis4.)