A006454 - OEIS

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A006454 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`3`
`2`		`15`
`3`		`120`
`4`		`528`
`5`		`4095`
`6`		`17955`
`7`		`139128`
`8`		`609960`
`9`		`4726275`
`10`		`20720703`
`11`		`160554240`
`12`		`703893960`
`13`		`5454117903`
`14`		`23911673955`
`15`		`185279454480`
`16`		`812293020528`
`17`		`6294047334435`
`18`		`27594051024015`
`19`		`213812329916328`
`20`		`937385441796000`
`21`		`7263325169820735`
`22`		`31843510970040003`
`23`		`246739243443988680`

[0,3,15,120,528,4095,17955,139128,609960,4726275, 20720703,160554240,703893960,5454117903, 23911673955,185279454480,812293020528, 6294047334435,27594051024015,213812329916328, 937385441796000,7263325169820735, 31843510970040003,246739243443988680]

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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)