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A208756 as a simple table

na(n)
11
20
32
40
51
64
70
81
93
108
110
121
133
149
1516
160
171
183
1911
2023
2132
220
231
243
2513
2631
2757
2864
290
301
313
3215
3339
3487
35135
36128
370
381
393
4017
4147
42121
43227
44313
45256
460
471
483
4919
5055
51159
52339
53579
54711
55512
560
571
583
5921
6063
61201
62471
63933
641431
651593
661024
670
681
693
7023
7171

[1,0,2,0,1,4,0,1,3,8,0,1,3,9,16,0,1,3,11,23,32,0,
 1,3,13,31,57,64,0,1,3,15,39,87,135,128,0,1,3,17,
 47,121,227,313,256,0,1,3,19,55,159,339,579,711,
 512,0,1,3,21,63,201,471,933,1431,1593,1024,0,1,3,
 23,71]