A183939 - OEIS

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

A183939 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`9`
`4`		`33`
`5`		`321`
`6`		`1411`
`7`		`10613`
`8`		`70449`
`9`		`534153`
`10`		`3908739`
`11`		`31172293`
`12`		`247959153`
`13`		`2040991681`
`14`		`16818777105`
`15`		`139873091535`
`16`		`1164007471357`
`17`		`9753589044027`
`18`		`82147216112609`
`19`		`696523301660651`
`20`		`5930891437147689`
`21`		`50682977439086169`

[1,1,9,33,321,1411,10613,70449,534153,3908739, 31172293,247959153,2040991681,16818777105, 139873091535,1164007471357,9753589044027, 82147216112609,696523301660651,5930891437147689, 50682977439086169]

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 18 15:25 EDT 2024. Contains 376000 sequences. (Running on oeis4.)