A247386 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A247386 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`1`
`3`		`6`
`4`		`30`
`5`		`130`
`6`		`570`
`7`		`2436`
`8`		`10696`
`9`		`47160`
`10`		`213660`
`11`		`981640`
`12`		`4625016`
`13`		`22171656`
`14`		`108766840`
`15`		`543350640`
`16`		`2772404160`
`17`		`14402353216`
`18`		`76294507536`
`19`		`411229473120`
`20`		`2257073089120`
`21`		`12595032754080`
`22`		`71481175794336`
`23`		`412117251151936`
`24`		`2413922299708800`
`25`		`14352066564086400`

[0,0,1,6,30,130,570,2436,10696,47160,213660, 981640,4625016,22171656,108766840,543350640, 2772404160,14402353216,76294507536,411229473120, 2257073089120,12595032754080,71481175794336, 412117251151936,2413922299708800, 14352066564086400]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 23 02:41 EDT 2024. Contains 371906 sequences. (Running on oeis4.)