A117917 - OEIS

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

A117917 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`15`
`3`		`52`
`4`		`175`
`5`		`582`
`6`		`1927`
`7`		`6370`
`8`		`21045`
`9`		`69514`
`10`		`229597`
`11`		`758316`
`12`		`2504557`
`13`		`8272000`
`14`		`27320571`
`15`		`90233728`
`16`		`298021771`
`17`		`984299058`
`18`		`3250918963`
`19`		`10737055966`
`20`		`35462086881`
`21`		`117123316630`
`22`		`386832036793`
`23`		`1277619427032`
`24`		`4219690317913`

[1,4,15,52,175,582,1927,6370,21045,69514,229597, 758316,2504557,8272000,27320571,90233728, 298021771,984299058,3250918963,10737055966, 35462086881,117123316630,386832036793, 1277619427032,4219690317913]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)