A221989 - OEIS

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A221989 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`12`
`5`		`34`
`6`		`104`
`7`		`406`
`8`		`1112`
`9`		`3980`
`10`		`15216`
`11`		`68034`
`12`		`312048`
`13`		`1625968`
`14`		`8771376`
`15`		`53270068`
`16`		`319218912`
`17`		`2135312542`
`18`		`14420106264`
`19`		`109051882344`
`20`		`815868128288`
`21`		`6772099860398`
`22`		`56501841264216`
`23`		`519359404861294`

[1,2,6,12,34,104,406,1112,3980,15216,68034,312048, 1625968,8771376,53270068,319218912,2135312542, 14420106264,109051882344,815868128288, 6772099860398,56501841264216,519359404861294]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)