A098821 - OEIS

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

A098821 as a simple table

`n`		`a(n)`
`0`		`4`
`1`		`4`
`2`		`5`
`3`		`9`
`4`		`21`
`5`		`53`
`6`		`133`
`7`		`325`
`8`		`773`
`9`		`1797`
`10`		`4101`
`11`		`9221`
`12`		`20485`
`13`		`45061`
`14`		`98309`
`15`		`212997`
`16`		`458757`
`17`		`983045`
`18`		`2097157`
`19`		`4456453`
`20`		`9437189`
`21`		`19922949`
`22`		`41943045`
`23`		`88080389`
`24`		`184549381`
`25`		`385875973`
`26`		`805306373`
`27`		`1677721605`
`28`		`3489660933`
`29`		`7247757317`

[4,4,5,9,21,53,133,325,773,1797,4101,9221,20485, 45061,98309,212997,458757,983045,2097157,4456453, 9437189,19922949,41943045,88080389,184549381, 385875973,805306373,1677721605,3489660933, 7247757317]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 16:38 EDT 2024. Contains 371794 sequences. (Running on oeis4.)