A020989 - OEIS

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A020989 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`6`
`2`		`26`
`3`		`106`
`4`		`426`
`5`		`1706`
`6`		`6826`
`7`		`27306`
`8`		`109226`
`9`		`436906`
`10`		`1747626`
`11`		`6990506`
`12`		`27962026`
`13`		`111848106`
`14`		`447392426`
`15`		`1789569706`
`16`		`7158278826`
`17`		`28633115306`
`18`		`114532461226`
`19`		`458129844906`
`20`		`1832519379626`
`21`		`7330077518506`
`22`		`29320310074026`
`23`		`117281240296106`
`24`		`469124961184426`

[1,6,26,106,426,1706,6826,27306,109226,436906, 1747626,6990506,27962026,111848106,447392426, 1789569706,7158278826,28633115306,114532461226, 458129844906,1832519379626,7330077518506, 29320310074026,117281240296106,469124961184426]

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Last modified May 10 01:03 EDT 2024. Contains 372354 sequences. (Running on oeis4.)