A199248 - OEIS

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A199248 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`20`
`5`		`69`
`6`		`248`
`7`		`923`
`8`		`3523`
`9`		`13706`
`10`		`54152`
`11`		`216710`
`12`		`876607`
`13`		`3578405`
`14`		`14722432`
`15`		`60986158`
`16`		`254145337`
`17`		`1064712328`
`18`		`4481577078`
`19`		`18943753140`
`20`		`80381689202`
`21`		`342254333393`
`22`		`1461864544896`
`23`		`6262021627055`
`24`		`26894816382199`
`25`		`115792035533779`
`26`		`499648608539714`
`27`		`2160504474956390`

[1,1,2,6,20,69,248,923,3523,13706,54152,216710, 876607,3578405,14722432,60986158,254145337, 1064712328,4481577078,18943753140,80381689202, 342254333393,1461864544896,6262021627055, 26894816382199,115792035533779,499648608539714, 2160504474956390]

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Last modified May 9 16:51 EDT 2024. Contains 372354 sequences. (Running on oeis4.)