A009244 - OEIS

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

A009244 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`20`
`5`		`92`
`6`		`448`
`7`		`2688`
`8`		`17296`
`9`		`127312`
`10`		`1013600`
`11`		`8850336`
`12`		`83547584`
`13`		`845380928`
`14`		`9196867072`
`15`		`105911556096`
`16`		`1301697829120`
`17`		`16814357324032`
`18`		`230093807905280`
`19`		`3294279618252288`
`20`		`49636887216382976`

[1,1,2,6,20,92,448,2688,17296,127312,1013600, 8850336,83547584,845380928,9196867072, 105911556096,1301697829120,16814357324032, 230093807905280,3294279618252288, 49636887216382976]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 10:56 EDT 2024. Contains 371791 sequences. (Running on oeis4.)