A007172 - OEIS

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A007172 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`3`
`5`		`7`
`6`		`24`
`7`		`93`
`8`		`434`
`9`		`2110`
`10`		`10957`
`11`		`58713`
`12`		`321576`
`13`		`1792133`
`14`		`10131027`
`15`		`57949430`
`16`		`334970205`
`17`		`1953890318`
`18`		`11489753730`
`19`		`68054102361`
`20`		`405715557048`

[1,1,1,3,7,24,93,434,2110,10957,58713,321576, 1792133,10131027,57949430,334970205,1953890318, 11489753730,68054102361,405715557048]

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Last modified April 24 19:37 EDT 2024. Contains 371963 sequences. (Running on oeis4.)