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A181230 as a simple table

na(n)
12
22
32
40
510
60
70
824
924
100
110
1224
13264
1424
150
160
170
181608
191608
200
210
220
230
246720
2533864
266720
270
280
290
300
3120160
32483840
33483840
3420160
350
360
370
380
3940320
405644800
4119158720
425644800
4340320
440
450
460
470
4840320
4957415680
50595506240
51595506240
5257415680
5340320

[2,2,2,0,10,0,0,24,24,0,0,24,264,24,0,0,0,1608,
 1608,0,0,0,0,6720,33864,6720,0,0,0,0,20160,483840,
 483840,20160,0,0,0,0,40320,5644800,19158720,
 5644800,40320,0,0,0,0,40320,57415680,595506240,
 595506240,57415680,40320]