A268013 - OEIS

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

A268013 as a simple table

`n`		`a(n)`
`1`		`3`
`2`		`9`
`3`		`27`
`4`		`78`
`5`		`222`
`6`		`622`
`7`		`1722`
`8`		`4719`
`9`		`12821`
`10`		`34575`
`11`		`92637`
`12`		`246788`
`13`		`654120`
`14`		`1725900`
`15`		`4535172`
`16`		`11872941`
`17`		`30977943`
`18`		`80575109`
`19`		`208983471`
`20`		`540606474`
`21`		`1395061474`
`22`		`3591893274`
`23`		`9228660318`
`24`		`23664610747`
`25`		`60570324105`
`26`		`154763821419`
`27`		`394795932561`

[3,9,27,78,222,622,1722,4719,12821,34575,92637, 246788,654120,1725900,4535172,11872941,30977943, 80575109,208983471,540606474,1395061474, 3591893274,9228660318,23664610747,60570324105, 154763821419,394795932561]

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 19 13:17 EDT 2024. Contains 375302 sequences. (Running on oeis4.)