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A179493 as a simple table

na(n)
00
11
22
312
4108
51420
624660
7541968
814547792
9465228720
1017385553440
11747776581200
1236566808933600
132012537262763872
14123612631608883872
158412289268206662720
16630378349868153698560
1751733701375836221013760

[0,1,2,12,108,1420,24660,541968,14547792,
 465228720,17385553440,747776581200,36566808933600,
 2012537262763872,123612631608883872,
 8412289268206662720,630378349868153698560,
 51733701375836221013760]