A019090 - OEIS

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A019090 as a simple table

`n`		`a(n)`
`3`		`0`
`4`		`0`
`5`		`4`
`6`		`6`
`7`		`6`
`8`		`20`
`9`		`46`
`10`		`94`
`11`		`246`
`12`		`596`
`13`		`1372`
`14`		`3452`
`15`		`9378`
`16`		`23093`
`17`		`57776`
`18`		`151623`
`19`		`399786`
`20`		`1026531`
`21`		`2693060`
`22`		`7118966`
`23`		`18796956`
`24`		`49678759`
`25`		`132259144`
`26`		`352238173`
`27`		`940738040`
`28`		`2519194109`
`29`		`6761985406`

[0,0,4,6,6,20,46,94,246,596,1372,3452,9378,23093, 57776,151623,399786,1026531,2693060,7118966, 18796956,49678759,132259144,352238173,940738040, 2519194109,6761985406]

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Last modified September 17 21:09 EDT 2024. Contains 375990 sequences. (Running on oeis4.)