A005642 - OEIS

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A005642 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`3`
`4`		`7`
`5`		`24`
`6`		`117`
`7`		`663`
`8`		`4824`
`9`		`40367`
`10`		`381554`
`11`		`4001849`
`12`		`46043780`
`13`		`576018785`
`14`		`7783281188`
`15`		`112953364381`
`16`		`1752128923245`
`17`		`28930230194371`
`18`		`506596534953769`

[1,3,7,24,117,663,4824,40367,381554,4001849, 46043780,576018785,7783281188,112953364381, 1752128923245,28930230194371,506596534953769]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)