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A087903 as a simple table

na(n)
21
31
41
51
64
71
81
911
109
111
121
1326
1448
1516
161
171
1857
19202
20140
2125
221
231
24120
25747
26916
27325
2836
291
301
31247
322559
335071
343045
35651
3649
371
381
39502
408362
4125300
4223480
438260
441176
4564
461
471
481013
4926520
50117962
51159736
5284456
5319404
541968
5581
561
571
582036
5982509
60525608
61998830
62749154
63253764
6440944
653105
66100
671

[1,1,1,1,4,1,1,11,9,1,1,26,48,16,1,1,57,202,140,
 25,1,1,120,747,916,325,36,1,1,247,2559,5071,3045,
 651,49,1,1,502,8362,25300,23480,8260,1176,64,1,1,
 1013,26520,117962,159736,84456,19404,1968,81,1,1,
 2036,82509,525608,998830,749154,253764,40944,3105,
 100,1]