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A208904 as a simple table

na(n)
11
23
31
45
56
61
77
819
99
101
119
1244
1342
1412
151
1611
1785
18138
1974
2015
211
2213
23146
24363
25316
26115
2718
281
2915
30231
31819
321059
33605
34165
3521
361
3717
38344
391652
402984
412470
421032
43224
4424
451
4619
47489
483060
497380
508378
514974
521624
53292
5427
551
5621
57670
585301
5916488

[1,3,1,5,6,1,7,19,9,1,9,44,42,12,1,11,85,138,74,
 15,1,13,146,363,316,115,18,1,15,231,819,1059,605,
 165,21,1,17,344,1652,2984,2470,1032,224,24,1,19,
 489,3060,7380,8378,4974,1624,292,27,1,21,670,5301,
 16488]