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A228329 as a simple table

na(n)
01
18
298
31320
418590
5268736
63952228
758837680
8883941750
913373883600
10203487733020
113110407163760
1247726453450988
13734694122886080
1411341161925265480
15175489379096245984
162721169178975361702
1742273090191785999728
18657788911222324942060
1910250564041646388681200

[1,8,98,1320,18590,268736,3952228,58837680,
 883941750,13373883600,203487733020,3110407163760,
 47726453450988,734694122886080,11341161925265480,
 175489379096245984,2721169178975361702,
 42273090191785999728,657788911222324942060,
 10250564041646388681200]