A117735 - OEIS

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A117735 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`18`
`5`		`90`
`6`		`690`
`7`		`4830`
`8`		`40110`
`9`		`362670`
`10`		`3628590`
`11`		`39914490`
`12`		`478999290`
`13`		`6226990770`
`14`		`87178261170`
`15`		`1307674337970`
`16`		`20922789857970`
`17`		`355687427585490`
`18`		`6402373705217490`
`19`		`121645100399132310`
`20`		`2432902008166940310`

[0,0,0,0,18,90,690,4830,40110,362670,3628590, 39914490,478999290,6226990770,87178261170, 1307674337970,20922789857970,355687427585490, 6402373705217490,121645100399132310, 2432902008166940310]

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Last modified January 16 14:56 EST 2021. Contains 340206 sequences. (Running on oeis4.)