A006880 - OEIS

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A006880 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`4`
`2`		`25`
`3`		`168`
`4`		`1229`
`5`		`9592`
`6`		`78498`
`7`		`664579`
`8`		`5761455`
`9`		`50847534`
`10`		`455052511`
`11`		`4118054813`
`12`		`37607912018`
`13`		`346065536839`
`14`		`3204941750802`
`15`		`29844570422669`
`16`		`279238341033925`
`17`		`2623557157654233`
`18`		`24739954287740860`
`19`		`234057667276344607`
`20`		`2220819602560918840`
`21`		`21127269486018731928`
`22`		`201467286689315906290`

[0,4,25,168,1229,9592,78498,664579,5761455, 50847534,455052511,4118054813,37607912018, 346065536839,3204941750802,29844570422669, 279238341033925,2623557157654233, 24739954287740860,234057667276344607, 2220819602560918840,21127269486018731928, 201467286689315906290]

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Last modified May 14 21:33 EDT 2024. Contains 372533 sequences. (Running on oeis4.)