A111285 - OEIS

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A111285 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`20`
`5`		`66`
`6`		`216`
`7`		`706`
`8`		`2308`
`9`		`7546`
`10`		`24672`
`11`		`80666`
`12`		`263740`
`13`		`862306`
`14`		`2819336`
`15`		`9217906`
`16`		`30138228`
`17`		`98537866`
`18`		`322172592`
`19`		`1053353226`
`20`		`3443970860`
`21`		`11260168946`
`22`		`36815469656`
`23`		`120369313506`
`24`		`393551182948`
`25`		`1286727730586`
`26`		`4206996000512`

[1,1,2,6,20,66,216,706,2308,7546,24672,80666, 263740,862306,2819336,9217906,30138228,98537866, 322172592,1053353226,3443970860,11260168946, 36815469656,120369313506,393551182948, 1286727730586,4206996000512]

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)