A090413 - OEIS

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

A090413 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`8`
`3`		`21`
`4`		`56`
`5`		`150`
`6`		`400`
`7`		`1065`
`8`		`2840`
`9`		`7578`
`10`		`20208`
`11`		`53874`
`12`		`143664`
`13`		`383148`
`14`		`1021728`
`15`		`2724465`
`16`		`7265240`
`17`		`19374450`
`18`		`51665200`
`19`		`137772246`
`20`		`367392656`
`21`		`979719348`
`22`		`2612584928`
`23`		`6966873546`
`24`		`18578329456`
`25`		`49542281220`
`26`		`132112749920`

[1,3,8,21,56,150,400,1065,2840,7578,20208,53874, 143664,383148,1021728,2724465,7265240,19374450, 51665200,137772246,367392656,979719348,2612584928, 6966873546,18578329456,49542281220,132112749920]

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 13 00:40 EDT 2024. Contains 375857 sequences. (Running on oeis4.)