A121569 - OEIS

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A121569 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`2`
`4`		`4`
`5`		`12`
`6`		`20`
`7`		`54`
`8`		`88`
`9`		`232`
`10`		`986`
`11`		`1596`
`12`		`6764`
`13`		`17710`
`14`		`28656`
`15`		`75024`
`16`		`317810`
`17`		`1346268`
`18`		`2178308`
`19`		`9227464`
`20`		`24157816`
`21`		`39088168`
`22`		`165580140`
`23`		`433494436`
`24`		`1836311902`
`25`		`12586269024`
`26`		`32951280098`
`27`		`53316291172`
`28`		`139583862444`
`29`		`225851433716`

[1,2,4,12,20,54,88,232,986,1596,6764,17710,28656, 75024,317810,1346268,2178308,9227464,24157816, 39088168,165580140,433494436,1836311902, 12586269024,32951280098,53316291172,139583862444, 225851433716]

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Last modified April 25 01:06 EDT 2024. Contains 371964 sequences. (Running on oeis4.)