A018906 - OEIS

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A018906 as a simple table

`n`		`a(n)`
`0`		`2`
`1`		`6`
`2`		`19`
`3`		`61`
`4`		`196`
`5`		`630`
`6`		`2026`
`7`		`6516`
`8`		`20957`
`9`		`67403`
`10`		`216786`
`11`		`697242`
`12`		`2242518`
`13`		`7212542`
`14`		`23197479`
`15`		`74609345`
`16`		`239963764`
`17`		`771788146`
`18`		`2482278709`
`19`		`7983677414`
`20`		`25677658524`
`21`		`82586271099`
`22`		`265619708576`
`23`		`854304579262`
`24`		`2747673800490`
`25`		`8837259564290`
`26`		`28423008798464`

[2,6,19,61,196,630,2026,6516,20957,67403,216786, 697242,2242518,7212542,23197479,74609345, 239963764,771788146,2482278709,7983677414, 25677658524,82586271099,265619708576,854304579262, 2747673800490,8837259564290,28423008798464]

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)