A212326 - OEIS

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A212326 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`20`
`3`		`112`
`4`		`676`
`5`		`4312`
`6`		`28704`
`7`		`197600`
`8`		`1397060`
`9`		`10090676`
`10`		`74152456`
`11`		`552666448`
`12`		`4167528000`
`13`		`31736182776`
`14`		`243698432960`
`15`		`1884809367456`
`16`		`14668777816708`
`17`		`114789815231560`
`18`		`902661488046900`
`19`		`7129068237647408`
`20`		`56524456978032904`
`21`		`449752267499647104`

[1,4,20,112,676,4312,28704,197600,1397060, 10090676,74152456,552666448,4167528000, 31736182776,243698432960,1884809367456, 14668777816708,114789815231560,902661488046900, 7129068237647408,56524456978032904, 449752267499647104]

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Last modified April 19 15:11 EDT 2024. Contains 371794 sequences. (Running on oeis4.)