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A172431 as a simple table

na(n)
11
21
32
41
54
63
71
86
910
104
111
128
1321
1420
155
161
1710
1836
1956
2035
216
221
2312
2455
25120
26126
2756
287
291
3014
3178
32220
33330
34252
3584
368
371
3816
39105
40364
41715
42792
43462
44120
459
461
4718
48136
49560
501365
512002
521716
53792
54165
5510

[1,1,2,1,4,3,1,6,10,4,1,8,21,20,5,1,10,36,56,35,6,
 1,12,55,120,126,56,7,1,14,78,220,330,252,84,8,1,
 16,105,364,715,792,462,120,9,1,18,136,560,1365,
 2002,1716,792,165,10]