A261589 - OEIS

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A261589 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`5`
`4`		`14`
`5`		`42`
`6`		`132`
`7`		`428`
`8`		`1420`
`9`		`4796`
`10`		`16432`
`11`		`56966`
`12`		`199444`
`13`		`704146`
`14`		`2504000`
`15`		`8960445`
`16`		`32241670`
`17`		`116580200`
`18`		`423372684`
`19`		`1543542369`
`20`		`5647383786`
`21`		`20728481590`
`22`		`76305607480`
`23`		`281648344965`
`24`		`1042139463066`
`25`		`3864822037106`
`26`		`14362983740692`
`27`		`53481776523398`

[1,1,2,5,14,42,132,428,1420,4796,16432,56966, 199444,704146,2504000,8960445,32241670,116580200, 423372684,1543542369,5647383786,20728481590, 76305607480,281648344965,1042139463066, 3864822037106,14362983740692,53481776523398]

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Last modified August 30 10:14 EDT 2024. Contains 375532 sequences. (Running on oeis4.)