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A324566 as a simple table

na(n)
02
172
22709504
315637972132823040
42676716427588188879089135779840000
52844659827809077182003221596452154340416256794895644098560000

[2,72,2709504,15637972132823040,
 2676716427588188879089135779840000,
 28446598278090771820032215964521543404162567948956\
 44098560000]