A208109 - OEIS

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

A208109 as a simple table

`n`		`a(n)`
`1`		`9`
`2`		`81`
`3`		`171`
`4`		`361`
`5`		`1805`
`6`		`9025`
`7`		`25555`
`8`		`72361`
`9`		`292941`
`10`		`1185921`
`11`		`3801699`
`12`		`12187081`
`13`		`45351581`
`14`		`168766081`
`15`		`570110035`
`16`		`1925893225`
`17`		`6923341485`
`18`		`24888533121`
`19`		`85943617731`
`20`		`296775442441`
`21`		`1051712556989`
`22`		`3727058052481`
`23`		`12988702493491`

[9,81,171,361,1805,9025,25555,72361,292941, 1185921,3801699,12187081,45351581,168766081, 570110035,1925893225,6923341485,24888533121, 85943617731,296775442441,1051712556989, 3727058052481,12988702493491]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 16 18:51 EDT 2024. Contains 371750 sequences. (Running on oeis4.)