A254823 - OEIS

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A254823 as a simple table

`n`		`a(n)`
`1`		`4`
`2`		`16`
`3`		`54`
`4`		`166`
`5`		`500`
`6`		`1557`
`7`		`5316`
`8`		`19292`
`9`		`69536`
`10`		`248613`
`11`		`893091`
`12`		`3146780`
`13`		`10584619`
`14`		`34064054`
`15`		`108011322`
`16`		`350399707`
`17`		`1186298040`
`18`		`4158109604`
`19`		`14813200901`
`20`		`52859389574`
`21`		`186599450347`
`22`		`643953634665`
`23`		`2160180481888`
`24`		`7086155229600`

[4,16,54,166,500,1557,5316,19292,69536,248613, 893091,3146780,10584619,34064054,108011322, 350399707,1186298040,4158109604,14813200901, 52859389574,186599450347,643953634665, 2160180481888,7086155229600]

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Last modified March 23 03:46 EDT 2023. Contains 361434 sequences. (Running on oeis4.)