A190861 - OEIS

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A190861 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`6`
`3`		`18`
`4`		`56`
`5`		`178`
`6`		`580`
`7`		`1922`
`8`		`6466`
`9`		`22022`
`10`		`75788`
`11`		`263152`
`12`		`920768`
`13`		`3243414`
`14`		`11492460`
`15`		`40934616`
`16`		`146484296`
`17`		`526389182`
`18`		`1898722242`
`19`		`6872300848`
`20`		`24951521464`
`21`		`90851221740`
`22`		`331666951116`
`23`		`1213729811070`
`24`		`4451547793956`

[1,2,6,18,56,178,580,1922,6466,22022,75788,263152, 920768,3243414,11492460,40934616,146484296, 526389182,1898722242,6872300848,24951521464, 90851221740,331666951116,1213729811070, 4451547793956]

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Last modified April 25 09:56 EDT 2024. Contains 371967 sequences. (Running on oeis4.)