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A194604 as a simple table

na(n)
10
20
30
41
50
60
73
816
90
100
116
1278
13193
140
150
1610
17228
181548
192080
200
210
2215
23520
246714
2527768
2621121
270
280
2921
301020
3121280
32181032
33474288
34206896
350
360
3728
381806
3955395
40807040
414697166
427888608
431979713
440
450
4636
472968
48125748
492817240
5029708800

[0,0,0,1,0,0,3,16,0,0,6,78,193,0,0,10,228,1548,
 2080,0,0,15,520,6714,27768,21121,0,0,21,1020,
 21280,181032,474288,206896,0,0,28,1806,55395,
 807040,4697166,7888608,1979713,0,0,36,2968,125748,
 2817240,29708800]