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A181825 as a simple table

na(n)
11
22
312
436
5120
6360
71680
85040
95400
1027000
1136960
1275600
13110880
14378000
15960960
161587600
171663200
182882880
197938000
208316000
2132672640
2234927200
2343243200
2498017920
25174636000
26216216000
27277830000
28908107200
291152597600
301241560320
311470268800
321944810000

[1,2,12,36,120,360,1680,5040,5400,27000,36960,
 75600,110880,378000,960960,1587600,1663200,
 2882880,7938000,8316000,32672640,34927200,
 43243200,98017920,174636000,216216000,277830000,
 908107200,1152597600,1241560320,1470268800,
 1944810000]