A180143 - OEIS

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A180143 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`16`
`3`		`58`
`4`		`208`
`5`		`742`
`6`		`2644`
`7`		`9418`
`8`		`33544`
`9`		`119470`
`10`		`425500`
`11`		`1515442`
`12`		`5397328`
`13`		`19222870`
`14`		`68463268`
`15`		`243835546`
`16`		`868433176`
`17`		`3092970622`
`18`		`11015778220`
`19`		`39233275906`
`20`		`139731384160`
`21`		`497660704294`
`22`		`1772444881204`
`23`		`6312656052202`

[1,4,16,58,208,742,2644,9418,33544,119470,425500, 1515442,5397328,19222870,68463268,243835546, 868433176,3092970622,11015778220,39233275906, 139731384160,497660704294,1772444881204, 6312656052202]

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Last modified April 25 12:33 EDT 2024. Contains 371969 sequences. (Running on oeis4.)