A309903 - OEIS

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A309903 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`21`
`3`		`71`
`4`		`196`
`5`		`2071`
`6`		`2071`
`7`		`33321`
`8`		`345821`
`9`		`736446`
`10`		`8548946`
`11`		`18314571`
`12`		`18314571`
`13`		`994877071`
`14`		`994877071`
`15`		`25408939571`
`16`		`86444095821`
`17`		`239031986446`
`18`		`1001971439571`
`19`		`16260760502071`
`20`		`92554705814571`
`21`		`283289569095821`
`22`		`1236963885502071`
`23`		`8389521258548946`

[0,1,21,71,196,2071,2071,33321,345821,736446, 8548946,18314571,18314571,994877071,994877071, 25408939571,86444095821,239031986446, 1001971439571,16260760502071,92554705814571, 283289569095821,1236963885502071,8389521258548946]

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Last modified April 15 20:35 EDT 2021. Contains 342977 sequences. (Running on oeis4.)