A018988 - OEIS

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A018988 as a simple table

`n`		`a(n)`
`2`		`2`
`3`		`4`
`4`		`24`
`5`		`174`
`6`		`1056`
`7`		`5888`
`8`		`36040`
`9`		`236972`
`10`		`1551794`
`11`		`10248112`
`12`		`68980166`
`13`		`470576013`
`14`		`3239450594`
`15`		`22488650598`
`16`		`157362252838`

[2,4,24,174,1056,5888,36040,236972,1551794, 10248112,68980166,470576013,3239450594, 22488650598,157362252838]

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Last modified April 17 20:27 EDT 2024. Contains 371767 sequences. (Running on oeis4.)