A281581 - OEIS

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A281581 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`21`
`3`		`127`
`4`		`807`
`5`		`5179`
`6`		`33111`
`7`		`210067`
`8`		`1321887`
`9`		`8255899`
`10`		`51225351`
`11`		`316067107`
`12`		`1941032367`
`13`		`11873549419`
`14`		`72394874391`
`15`		`440204293747`
`16`		`2670669533247`
`17`		`16172309991739`
`18`		`97779619272231`
`19`		`590423692897987`
`20`		`3561340764760527`
`21`		`21462312506478859`

[1,4,21,127,807,5179,33111,210067,1321887,8255899, 51225351,316067107,1941032367,11873549419, 72394874391,440204293747,2670669533247, 16172309991739,97779619272231,590423692897987, 3561340764760527,21462312506478859]

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Last modified April 23 19:56 EDT 2024. Contains 371916 sequences. (Running on oeis4.)