A000287 - OEIS

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A000287 as a simple table

`n`		`a(n)`
`6`		`1`
`7`		`0`
`8`		`4`
`9`		`6`
`10`		`24`
`11`		`66`
`12`		`214`
`13`		`676`
`14`		`2209`
`15`		`7296`
`16`		`24460`
`17`		`82926`
`18`		`284068`
`19`		`981882`
`20`		`3421318`
`21`		`12007554`
`22`		`42416488`
`23`		`150718770`
`24`		`538421590`
`25`		`1932856590`
`26`		`6969847486`
`27`		`25237057110`
`28`		`91729488354`
`29`		`334589415276`
`30`		`1224445617889`
`31`		`4494622119424`

[1,0,4,6,24,66,214,676,2209,7296,24460,82926, 284068,981882,3421318,12007554,42416488,150718770, 538421590,1932856590,6969847486,25237057110, 91729488354,334589415276,1224445617889, 4494622119424]

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Last modified April 25 13:27 EDT 2024. Contains 371971 sequences. (Running on oeis4.)