A006660 - OEIS

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A006660 as a simple table

`n`		`a(n)`
`3`		`1`
`4`		`1`
`5`		`2`
`6`		`3`
`7`		`7`
`8`		`14`
`9`		`36`
`10`		`81`
`11`		`221`
`12`		`538`
`13`		`1530`
`14`		`3926`
`15`		`11510`
`16`		`30694`
`17`		`92114`
`18`		`252939`
`19`		`773259`
`20`		`2172830`
`21`		`6743122`
`22`		`19304190`
`23`		`60658606`
`24`		`176343390`
`25`		`559952824`
`26`		`1649008456`
`27`		`5283239596`
`28`		`15730575554`
`29`		`50789908772`
`30`		`152663683494`

[1,1,2,3,7,14,36,81,221,538,1530,3926,11510,30694, 92114,252939,773259,2172830,6743122,19304190, 60658606,176343390,559952824,1649008456, 5283239596,15730575554,50789908772,152663683494]

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Last modified April 23 06:45 EDT 2024. Contains 371906 sequences. (Running on oeis4.)