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A023938 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`2340`
`3`		`26880`
`4`		`198510`
`5`		`752640`
`6`		`2777320`
`7`		`6666240`
`8`		`18056580`
`9`		`34222080`
`10`		`76790952`
`11`		`126124800`
`12`		`251743800`
`13`		`373201920`
`14`		`684788880`
`15`		`946636800`
`16`		`1632682350`
`17`		`2136207360`
`18`		`3505616460`
`19`		`4398078720`
`20`		`6969644136`
`21`		`8433039360`
`22`		`12913865640`
`23`		`15239485440`
`24`		`22786814120`

[1,0,2340,26880,198510,752640,2777320,6666240, 18056580,34222080,76790952,126124800,251743800, 373201920,684788880,946636800,1632682350, 2136207360,3505616460,4398078720,6969644136, 8433039360,12913865640,15239485440,22786814120]

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Last modified September 11 13:05 EDT 2024. Contains 375829 sequences. (Running on oeis4.)