A007856 - OEIS

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A007856 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`12`
`4`		`52`
`5`		`236`
`6`		`1109`
`7`		`5366`
`8`		`26639`
`9`		`135300`
`10`		`701269`
`11`		`3700400`
`12`		`19834973`
`13`		`107784622`
`14`		`592705377`
`15`		`3292970302`
`16`		`18458954896`
`17`		`104276682820`
`18`		`593056996445`
`19`		`3392898090908`
`20`		`19512100041995`
`21`		`112729617387020`
`22`		`653965783541960`
`23`		`3807766434556940`

[1,3,12,52,236,1109,5366,26639,135300,701269, 3700400,19834973,107784622,592705377,3292970302, 18458954896,104276682820,593056996445, 3392898090908,19512100041995,112729617387020, 653965783541960,3807766434556940]

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Last modified May 13 16:16 EDT 2024. Contains 372522 sequences. (Running on oeis4.)