A006659 - OEIS

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

A006659 as a simple table

`n`		`a(n)`
`1`		`2`
`2`		`12`
`3`		`56`
`4`		`240`
`5`		`990`
`6`		`4004`
`7`		`16016`
`8`		`63648`
`9`		`251940`
`10`		`994840`
`11`		`3922512`
`12`		`15452320`
`13`		`60843510`
`14`		`239519700`
`15`		`942871200`
`16`		`3711935040`
`17`		`14615744220`
`18`		`57562286760`
`19`		`226760523600`
`20`		`893550621600`
`21`		`3522078700140`
`22`		`13887053160552`

[2,12,56,240,990,4004,16016,63648,251940,994840, 3922512,15452320,60843510,239519700,942871200, 3711935040,14615744220,57562286760,226760523600, 893550621600,3522078700140,13887053160552]

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 18 16:09 EDT 2024. Contains 376000 sequences. (Running on oeis4.)