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A166341 as a simple table

na(n)
11
21
31
41
510
61
71
823
923
101
111
1250
13138
1450
151
161
17105
18614
19614
20105
211
221
23216
242367
254912
262367
27216
281
291
30439
318397
3231483
3331483
348397
35439
361
371
38886
3928264
40176314
41314830
42176314
4328264
44886
451
461
471781
4891880
49903104
502632034
512632034
52903104
5391880
541781
551

[1,1,1,1,10,1,1,23,23,1,1,50,138,50,1,1,105,614,
 614,105,1,1,216,2367,4912,2367,216,1,1,439,8397,
 31483,31483,8397,439,1,1,886,28264,176314,314830,
 176314,28264,886,1,1,1781,91880,903104,2632034,
 2632034,903104,91880,1781,1]