A263897 - OEIS

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A263897 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`16`
`5`		`44`
`6`		`134`
`7`		`414`
`8`		`1290`
`9`		`4102`
`10`		`13306`
`11`		`43718`
`12`		`145176`
`13`		`487384`
`14`		`1651154`
`15`		`5636702`
`16`		`19381392`
`17`		`67074420`
`18`		`233483430`
`19`		`817106622`
`20`		`2873589060`
`21`		`10151255976`
`22`		`36009769278`
`23`		`128231072994`
`24`		`458268615966`
`25`		`1643227382022`
`26`		`5910606009330`
`27`		`21322486928518`
`28`		`77132729929864`

[1,1,2,6,16,44,134,414,1290,4102,13306,43718, 145176,487384,1651154,5636702,19381392,67074420, 233483430,817106622,2873589060,10151255976, 36009769278,128231072994,458268615966, 1643227382022,5910606009330,21322486928518, 77132729929864]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)