A003291 - OEIS

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A003291 as a simple table

`n`		`a(n)`
`2`		`2`
`3`		`6`
`4`		`16`
`5`		`46`
`6`		`140`
`7`		`464`
`8`		`1580`
`9`		`5538`
`10`		`19804`
`11`		`71884`
`12`		`264204`
`13`		`980778`
`14`		`3671652`
`15`		`13843808`
`16`		`52519836`
`17`		`200320878`
`18`		`767688176`
`19`		`2954410484`
`20`		`11412815256`
`21`		`44237340702`
`22`		`171997272012`
`23`		`670612394118`
`24`		`2621415708492`
`25`		`10271274034254`

[2,6,16,46,140,464,1580,5538,19804,71884,264204, 980778,3671652,13843808,52519836,200320878, 767688176,2954410484,11412815256,44237340702, 171997272012,670612394118,2621415708492, 10271274034254]

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Last modified April 24 05:26 EDT 2024. Contains 371918 sequences. (Running on oeis4.)