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A330209 as a simple table

na(n)
01
12
21
32
45
51
612
79
81
912
1039
1114
121
1390
1495
1520
161
1790
18375
19195
2027
211
22840
231155
24357
2535
261
27840
284305
292940
30602
3144
321
339450
3416065
356552
36954
3754
381
399450
4057645
4148825
4213230
431440
4465
451
46124740
47252945
48128205
4924750
502090
5177
521
53124740
54883575
55893970
56301455
5743560
582937
5990
601

[1,2,1,2,5,1,12,9,1,12,39,14,1,90,95,20,1,90,375,
 195,27,1,840,1155,357,35,1,840,4305,2940,602,44,1,
 9450,16065,6552,954,54,1,9450,57645,48825,13230,
 1440,65,1,124740,252945,128205,24750,2090,77,1,
 124740,883575,893970,301455,43560,2937,90,1]