A006817 - OEIS

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A006817 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`12`
`3`		`36`
`4`		`108`
`5`		`316`
`6`		`916`
`7`		`2628`
`8`		`7500`
`9`		`21268`
`10`		`60092`
`11`		`169092`
`12`		`474924`
`13`		`1329188`
`14`		`3715244`
`15`		`10359636`
`16`		`28856252`
`17`		`80220244`
`18`		`222847804`
`19`		`618083972`
`20`		`1713283628`
`21`		`4742946484`
`22`		`13123882524`
`23`		`36274940740`
`24`		`100226653420`
`25`		`276669062116`
`26`		`763482430316`
`27`		`2105208491748`
`28`		`5803285527724`

[1,4,12,36,108,316,916,2628,7500,21268,60092, 169092,474924,1329188,3715244,10359636,28856252, 80220244,222847804,618083972,1713283628, 4742946484,13123882524,36274940740,100226653420, 276669062116,763482430316,2105208491748, 5803285527724]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)