A027040 - OEIS

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A027040 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`9`
`3`		`31`
`4`		`129`
`5`		`531`
`6`		`2129`
`7`		`8351`
`8`		`32177`
`9`		`122211`
`10`		`458801`
`11`		`1706015`
`12`		`6293169`
`13`		`23057651`
`14`		`83992313`
`15`		`304424639`
`16`		`1098525761`
`17`		`3948727555`
`18`		`14145206209`
`19`		`50515602111`
`20`		`179904080257`
`21`		`639103899411`
`22`		`2265253438745`
`23`		`8012421964063`

[1,3,9,31,129,531,2129,8351,32177,122211,458801, 1706015,6293169,23057651,83992313,304424639, 1098525761,3948727555,14145206209,50515602111, 179904080257,639103899411,2265253438745, 8012421964063]

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)