A221870 - OEIS

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A221870 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`20`
`3`		`162`
`4`		`1442`
`5`		`12688`
`6`		`110720`
`7`		`970828`
`8`		`8489090`
`9`		`74301713`
`10`		`650080567`
`11`		`5688284025`
`12`		`49771429169`
`13`		`435493321644`
`14`		`3810502524152`
`15`		`33341324878142`
`16`		`291731631862014`
`17`		`2552608002906241`
`18`		`22334937934827800`
`19`		`195427359369424289`

[1,20,162,1442,12688,110720,970828,8489090, 74301713,650080567,5688284025,49771429169, 435493321644,3810502524152,33341324878142, 291731631862014,2552608002906241, 22334937934827800,195427359369424289]

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Last modified May 7 04:18 EDT 2024. Contains 372300 sequences. (Running on oeis4.)