A271944 - OEIS

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A271944 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`2`
`2`		`4`
`3`		`22`
`4`		`56`
`5`		`250`
`6`		`732`
`7`		`2926`
`8`		`9264`
`9`		`34866`
`10`		`115316`
`11`		`419846`
`12`		`1422824`
`13`		`5086122`
`14`		`17471692`
`15`		`61823966`
`16`		`213983072`
`17`		`752927074`
`18`		`2616950756`
`19`		`9179311350`
`20`		`31978941080`
`21`		`111975792474`
`22`		`390606950844`
`23`		`1366410142030`
`24`		`4769896907152`
`25`		`16676981234578`
`26`		`58239643256916`

[0,2,4,22,56,250,732,2926,9264,34866,115316, 419846,1422824,5086122,17471692,61823966, 213983072,752927074,2616950756,9179311350, 31978941080,111975792474,390606950844, 1366410142030,4769896907152,16676981234578, 58239643256916]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)