A098469 - OEIS

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A098469 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`6`
`3`		`20`
`4`		`78`
`5`		`332`
`6`		`1516`
`7`		`7240`
`8`		`35734`
`9`		`180620`
`10`		`929940`
`11`		`4858328`
`12`		`25687052`
`13`		`137177016`
`14`		`738819672`
`15`		`4008435984`
`16`		`21886788582`
`17`		`120178329740`
`18`		`663179894788`
`19`		`3675923244856`
`20`		`20456707469540`
`21`		`114254175491304`
`22`		`640223315385576`

[1,2,6,20,78,332,1516,7240,35734,180620,929940, 4858328,25687052,137177016,738819672,4008435984, 21886788582,120178329740,663179894788, 3675923244856,20456707469540,114254175491304, 640223315385576]

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Last modified May 3 08:32 EDT 2024. Contains 372207 sequences. (Running on oeis4.)