A002293 - OEIS

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A002293 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`4`
`3`		`22`
`4`		`140`
`5`		`969`
`6`		`7084`
`7`		`53820`
`8`		`420732`
`9`		`3362260`
`10`		`27343888`
`11`		`225568798`
`12`		`1882933364`
`13`		`15875338990`
`14`		`134993766600`
`15`		`1156393243320`
`16`		`9969937491420`
`17`		`86445222719724`
`18`		`753310723010608`
`19`		`6594154339031800`
`20`		`57956002331347120`
`21`		`511238042454541545`

[1,1,4,22,140,969,7084,53820,420732,3362260, 27343888,225568798,1882933364,15875338990, 134993766600,1156393243320,9969937491420, 86445222719724,753310723010608,6594154339031800, 57956002331347120,511238042454541545]

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Last modified August 16 17:43 EDT 2024. Contains 375177 sequences. (Running on oeis4.)