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A066449 as a simple table

na(n)
11
22
33
46
55
615
77
870
984
10210
1111
12495
1313
143003
156435
1612870
1717
1818564
1919
20125970
21293930
22646646
2323
24735471
2553130
269657700
274686825
2830421755
2929
305852925
3131
32601080390
33573166440
342203961430
35417225900
361251677700
3737
3833578000610

[1,2,3,6,5,15,7,70,84,210,11,495,13,3003,6435,
 12870,17,18564,19,125970,293930,646646,23,735471,
 53130,9657700,4686825,30421755,29,5852925,31,
 601080390,573166440,2203961430,417225900,
 1251677700,37,33578000610]