A026881 - OEIS

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A026881 as a simple table

`n`		`a(n)`
`4`		`1`
`5`		`18`
`6`		`199`
`7`		`1756`
`8`		`13624`
`9`		`97434`
`10`		`659549`
`11`		`4294814`
`12`		`27187126`
`13`		`168499288`
`14`		`1027595830`
`15`		`6188801692`
`16`		`36907274904`
`17`		`218380550880`
`18`		`1284054213847`
`19`		`7511758730412`
`20`		`43762192338180`
`21`		`254086749470802`
`22`		`1471134871883972`

[1,18,199,1756,13624,97434,659549,4294814, 27187126,168499288,1027595830,6188801692, 36907274904,218380550880,1284054213847, 7511758730412,43762192338180,254086749470802, 1471134871883972]

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Last modified May 28 22:13 EDT 2024. Contains 372921 sequences. (Running on oeis4.)