A009247 - OEIS

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A009247 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`6`
`4`		`21`
`5`		`92`
`6`		`597`
`7`		`3472`
`8`		`26537`
`9`		`209488`
`10`		`1834249`
`11`		`17750304`
`12`		`180938109`
`13`		`2024471360`
`14`		`23781199197`
`15`		`300235771648`
`16`		`3989919982673`
`17`		`56114783183104`
`18`		`830092069266577`
`19`		`12879188611161600`
`20`		`209479116176732901`
`21`		`3554985326516636672`

[1,1,1,6,21,92,597,3472,26537,209488,1834249, 17750304,180938109,2024471360,23781199197, 300235771648,3989919982673,56114783183104, 830092069266577,12879188611161600, 209479116176732901,3554985326516636672]

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Last modified June 8 05:45 EDT 2024. Contains 373207 sequences. (Running on oeis4.)