A009225 - OEIS

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

A009225 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`5`
`4`		`16`
`5`		`57`
`6`		`248`
`7`		`1157`
`8`		`6336`
`9`		`36753`
`10`		`244480`
`11`		`1702725`
`12`		`13409408`
`13`		`109438409`
`14`		`999327488`
`15`		`9375819525`
`16`		`97590304768`
`17`		`1036122313377`
`18`		`12120423043072`
`19`		`143739691502213`
`20`		`1867576863899648`
`21`		`24474485553698265`

[1,1,2,5,16,57,248,1157,6336,36753,244480,1702725, 13409408,109438409,999327488,9375819525, 97590304768,1036122313377,12120423043072, 143739691502213,1867576863899648, 24474485553698265]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 3 10:32 EDT 2024. Contains 372207 sequences. (Running on oeis4.)