A007985 - OEIS

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

A007985 as a simple table

`n`		`a(n)`
`1`		`2`
`2`		`2`
`3`		`6`
`4`		`22`
`5`		`58`
`6`		`146`
`7`		`414`
`8`		`1206`
`9`		`3410`
`10`		`9634`
`11`		`27670`
`12`		`79926`
`13`		`230666`
`14`		`667058`
`15`		`1936174`
`16`		`5632662`
`17`		`16408866`
`18`		`47875650`
`19`		`139908774`
`20`		`409404630`
`21`		`1199368026`
`22`		`3517351890`
`23`		`10325547582`
`24`		`30339113718`
`25`		`89217594738`
`26`		`262561101282`
`27`		`773248631222`
`28`		`2278737199606`

[2,2,6,22,58,146,414,1206,3410,9634,27670,79926, 230666,667058,1936174,5632662,16408866,47875650, 139908774,409404630,1199368026,3517351890, 10325547582,30339113718,89217594738,262561101282, 773248631222,2278737199606]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 11:24 EDT 2024. Contains 371967 sequences. (Running on oeis4.)