A071258 - OEIS

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A071258 as a simple table

`n`		`a(n)`
`0`		`4`
`1`		`9`
`2`		`28`
`3`		`57`
`4`		`115`
`5`		`231`
`6`		`694`
`7`		`1389`
`8`		`2779`
`9`		`5559`
`10`		`16678`
`11`		`33357`
`12`		`66715`
`13`		`133431`
`14`		`400294`
`15`		`800589`
`16`		`1601179`
`17`		`3202359`
`18`		`9607078`
`19`		`19214157`
`20`		`38428315`
`21`		`76856631`
`22`		`153713263`
`23`		`307426527`
`24`		`614853055`
`25`		`1229706111`
`26`		`3689118334`
`27`		`7378236669`
`28`		`14756473339`

[4,9,28,57,115,231,694,1389,2779,5559,16678,33357, 66715,133431,400294,800589,1601179,3202359, 9607078,19214157,38428315,76856631,153713263, 307426527,614853055,1229706111,3689118334, 7378236669,14756473339]

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)