A003261 - OEIS

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A003261 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`7`
`3`		`23`
`4`		`63`
`5`		`159`
`6`		`383`
`7`		`895`
`8`		`2047`
`9`		`4607`
`10`		`10239`
`11`		`22527`
`12`		`49151`
`13`		`106495`
`14`		`229375`
`15`		`491519`
`16`		`1048575`
`17`		`2228223`
`18`		`4718591`
`19`		`9961471`
`20`		`20971519`
`21`		`44040191`
`22`		`92274687`
`23`		`192937983`
`24`		`402653183`
`25`		`838860799`
`26`		`1744830463`
`27`		`3623878655`
`28`		`7516192767`

[1,7,23,63,159,383,895,2047,4607,10239,22527, 49151,106495,229375,491519,1048575,2228223, 4718591,9961471,20971519,44040191,92274687, 192937983,402653183,838860799,1744830463, 3623878655,7516192767]

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Last modified April 19 14:10 EDT 2024. Contains 371792 sequences. (Running on oeis4.)