A198644 - OEIS

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

A198644 as a simple table

`n`		`a(n)`
`0`		`7`
`1`		`23`
`2`		`71`
`3`		`215`
`4`		`647`
`5`		`1943`
`6`		`5831`
`7`		`17495`
`8`		`52487`
`9`		`157463`
`10`		`472391`
`11`		`1417175`
`12`		`4251527`
`13`		`12754583`
`14`		`38263751`
`15`		`114791255`
`16`		`344373767`
`17`		`1033121303`
`18`		`3099363911`
`19`		`9298091735`
`20`		`27894275207`
`21`		`83682825623`
`22`		`251048476871`
`23`		`753145430615`
`24`		`2259436291847`
`25`		`6778308875543`

[7,23,71,215,647,1943,5831,17495,52487,157463, 472391,1417175,4251527,12754583,38263751, 114791255,344373767,1033121303,3099363911, 9298091735,27894275207,83682825623,251048476871, 753145430615,2259436291847,6778308875543]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 15:00 EDT 2024. Contains 371989 sequences. (Running on oeis4.)