A003685 - OEIS

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A003685 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`8`
`3`		`20`
`4`		`62`
`5`		`132`
`6`		`336`
`7`		`688`
`8`		`1578`
`9`		`3190`
`10`		`6902`
`11`		`13878`
`12`		`29038`
`13`		`58238`
`14`		`119518`
`15`		`239390`
`16`		`485822`
`17`		`972414`
`18`		`1960830`
`19`		`3923326`
`20`		`7882494`
`21`		`15768574`
`22`		`31616510`
`23`		`63240702`
`24`		`126655486`
`25`		`253327358`
`26`		`507033598`
`27`		`1014102014`
`28`		`2029023230`
`29`		`4058120190`
`30`		`8118001662`
`31`		`16236158974`
`32`		`32476086270`

[1,8,20,62,132,336,688,1578,3190,6902,13878,29038, 58238,119518,239390,485822,972414,1960830,3923326, 7882494,15768574,31616510,63240702,126655486, 253327358,507033598,1014102014,2029023230, 4058120190,8118001662,16236158974,32476086270]

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)