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A347284 as a simple table

na(n)
01
12
212
324
4720
5151200
6302400
71814400
84191264000
98382528000
10251727315840000
11503454631680000
123020727790080000
131542111744113740800000
143084223488227481600000
1592526704646824448000000
16555160227880946688000000
171110320455761893376000000
1810769764221549079560253440000000

[1,2,12,24,720,151200,302400,1814400,4191264000,
 8382528000,251727315840000,503454631680000,
 3020727790080000,1542111744113740800000,
 3084223488227481600000,92526704646824448000000,
 555160227880946688000000,
 1110320455761893376000000,
 10769764221549079560253440000000]