A204428 - OEIS

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A204428 as a simple table

`n`		`a(n)`
`1`		`2`
`2`		`4`
`3`		`9`
`4`		`40`
`5`		`192`
`6`		`1032`
`7`		`7824`
`8`		`62496`
`9`		`530712`
`10`		`5619456`
`11`		`61710336`
`12`		`707802624`
`13`		`9591229440`
`14`		`133983590400`
`15`		`1938416832000`
`16`		`32061464064000`
`17`		`544216485888000`
`18`		`9509523337728000`
`19`		`185772505605120000`
`20`		`3711395156281344000`

[2,4,9,40,192,1032,7824,62496,530712,5619456, 61710336,707802624,9591229440,133983590400, 1938416832000,32061464064000,544216485888000, 9509523337728000,185772505605120000, 3711395156281344000]

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Last modified June 6 10:24 EDT 2024. Contains 373127 sequences. (Running on oeis4.)