A141580 - OEIS

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A141580 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`1`
`3`		`2`
`4`		`6`
`5`		`18`
`6`		`78`
`7`		`456`
`8`		`4299`
`9`		`68754`
`10`		`1990286`
`11`		`106088988`
`12`		`10454883132`
`13`		`1904236651216`
`14`		`641859005526860`
`15`		`401547534010157680`
`16`		`467956331904669136874`
`17`		`1019785644052109276678788`
`18`		`4171197546082606538129623140`

[0,1,2,6,18,78,456,4299,68754,1990286,106088988, 10454883132,1904236651216,641859005526860, 401547534010157680,467956331904669136874, 1019785644052109276678788, 4171197546082606538129623140]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)