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A121547 as a simple table

na(n)
00
10
21
30
44
54
60
710
820
910
100
1120
1260
1360
1420
150
1635
17140
18210
19140
2035
210
2256
23280
24560
25560
26280
2756
280
2984
30504
311260
321680
331260
34504
3584
360
37120
38840
392520
404200
414200
422520
43840
44120
450
46165
471320
484620
499240
5011550
519240
524620
531320
54165
550
56220
571980
587920
5918480
6027720
6127720
6218480
637920
641980
65220

[0,0,1,0,4,4,0,10,20,10,0,20,60,60,20,0,35,140,
 210,140,35,0,56,280,560,560,280,56,0,84,504,1260,
 1680,1260,504,84,0,120,840,2520,4200,4200,2520,
 840,120,0,165,1320,4620,9240,11550,9240,4620,1320,
 165,0,220,1980,7920,18480,27720,27720,18480,7920,
 1980,220]