A020698 - OEIS

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A020698 as a simple table

`n`		`a(n)`
`0`		`2`
`1`		`9`
`2`		`41`
`3`		`187`
`4`		`853`
`5`		`3891`
`6`		`17749`
`7`		`80963`
`8`		`369317`
`9`		`1684659`
`10`		`7684661`
`11`		`35053987`
`12`		`159900613`
`13`		`729395091`
`14`		`3327174229`
`15`		`15177080963`
`16`		`69231056357`
`17`		`315801119859`
`18`		`1440543486581`
`19`		`6571115193187`
`20`		`29974488992773`
`21`		`136730214577491`
`22`		`623702094901909`
`23`		`2845050045354563`

[2,9,41,187,853,3891,17749,80963,369317,1684659, 7684661,35053987,159900613,729395091,3327174229, 15177080963,69231056357,315801119859, 1440543486581,6571115193187,29974488992773, 136730214577491,623702094901909,2845050045354563]

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Last modified April 16 05:35 EDT 2024. Contains 371697 sequences. (Running on oeis4.)