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A268142 as a simple table

na(n)
10
20
30
40
51
60
70
81
90
100
110
123
130
146
150
160
175
188
196
200
210
220
2312
2432
25672
260
27120
280
290
3026
31238
324734
335760
34120
350
360
370
3860
391488
40177048
41218880
421411560
430
445040
450
460
47143
489778
494131792
5059028840
5197608120
5225024320
535040
540
550
560
57353
5891628
59132137160

[0,0,0,0,1,0,0,1,0,0,0,3,0,6,0,0,5,8,6,0,0,0,12,
 32,672,0,120,0,0,26,238,4734,5760,120,0,0,0,60,
 1488,177048,218880,1411560,0,5040,0,0,143,9778,
 4131792,59028840,97608120,25024320,5040,0,0,0,353,
 91628,132137160]