A012781 - OEIS

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A012781 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`4`
`3`		`16`
`4`		`65`
`5`		`265`
`6`		`1081`
`7`		`4410`
`8`		`17991`
`9`		`73396`
`10`		`299426`
`11`		`1221537`
`12`		`4983377`
`13`		`20330163`
`14`		`82938844`
`15`		`338356945`
`16`		`1380359512`
`17`		`5631308624`
`18`		`22973462017`
`19`		`93722435101`
`20`		`382349636061`
`21`		`1559831901918`
`22`		`6363483400447`
`23`		`25960439030624`

[0,1,4,16,65,265,1081,4410,17991,73396,299426, 1221537,4983377,20330163,82938844,338356945, 1380359512,5631308624,22973462017,93722435101, 382349636061,1559831901918,6363483400447, 25960439030624]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)