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A166961 as a simple table

na(n)
11
21
31
41
59
61
71
859
942
101
111
12361
13925
14154
151
161
172175
1816402
198937
20507
211
221
2313061
24265605
25365050
2667500
271587
281
291
3078379
314127746
3212611845
335592850
34442242
354852
361
371
38470289
3962935117
40398536866
41365184855
4268337922
432652742
4414676
451

[1,1,1,1,9,1,1,59,42,1,1,361,925,154,1,1,2175,
 16402,8937,507,1,1,13061,265605,365050,67500,1587,
 1,1,78379,4127746,12611845,5592850,442242,4852,1,
 1,470289,62935117,398536866,365184855,68337922,
 2652742,14676,1]