A090017 - OEIS

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A090017 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`4`
`3`		`18`
`4`		`80`
`5`		`356`
`6`		`1584`
`7`		`7048`
`8`		`31360`
`9`		`139536`
`10`		`620864`
`11`		`2762528`
`12`		`12291840`
`13`		`54692416`
`14`		`243353344`
`15`		`1082798208`
`16`		`4817899520`
`17`		`21437194496`
`18`		`95384577024`
`19`		`424412697088`
`20`		`1888419942400`
`21`		`8402505163776`
`22`		`37386860539904`
`23`		`166352452487168`

[0,1,4,18,80,356,1584,7048,31360,139536,620864, 2762528,12291840,54692416,243353344,1082798208, 4817899520,21437194496,95384577024,424412697088, 1888419942400,8402505163776,37386860539904, 166352452487168]

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Last modified April 16 07:08 EDT 2024. Contains 371698 sequences. (Running on oeis4.)