A138619 - OEIS

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

A138619 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`24`
`5`		`120`
`6`		`664`
`7`		`3596`
`8`		`19004`
`9`		`99596`
`10`		`521420`
`11`		`2731292`
`12`		`14313052`
`13`		`75016940`
`14`		`393181820`
`15`		`2060736460`
`16`		`10800601788`
`17`		`56607287052`
`18`		`296685718140`
`19`		`1554966533836`
`20`		`8149773122044`
`21`		`42713977098636`
`22`		`223869280280316`

[1,2,6,24,120,664,3596,19004,99596,521420,2731292, 14313052,75016940,393181820,2060736460, 10800601788,56607287052,296685718140, 1554966533836,8149773122044,42713977098636, 223869280280316]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 1 16:12 EDT 2024. Contains 372175 sequences. (Running on oeis4.)