A027063 - OEIS

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A027063 as a simple table

`n`		`a(n)`
`4`		`0`
`5`		`2`
`6`		`6`
`7`		`20`
`8`		`68`
`9`		`228`
`10`		`754`
`11`		`2456`
`12`		`7884`
`13`		`24982`
`14`		`78282`
`15`		`242998`
`16`		`748364`
`17`		`2289584`
`18`		`6966346`
`19`		`21098366`
`20`		`63651808`
`21`		`191406976`
`22`		`573998990`
`23`		`1717334182`
`24`		`5127933348`
`25`		`15286303526`
`26`		`45503354154`
`27`		`135287179508`
`28`		`401809091392`
`29`		`1192336418386`

[0,2,6,20,68,228,754,2456,7884,24982,78282,242998, 748364,2289584,6966346,21098366,63651808, 191406976,573998990,1717334182,5127933348, 15286303526,45503354154,135287179508,401809091392, 1192336418386]

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Last modified September 1 15:28 EDT 2024. Contains 375591 sequences. (Running on oeis4.)