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A070946 as a simple table

na(n)
01
11
22
36
424
5120
6600
73480
822800
9164880
101285920
1110516320
1292931840
13877374720
148762014080
1591819440000
161005716908800
1711584953158400
18139521689740800
191748830512960000
2022750446292531200
21306931140411955200
224296645083802470400
2362213458150660147200

[1,1,2,6,24,120,600,3480,22800,164880,1285920,
 10516320,92931840,877374720,8762014080,
 91819440000,1005716908800,11584953158400,
 139521689740800,1748830512960000,
 22750446292531200,306931140411955200,
 4296645083802470400,62213458150660147200]