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A113964 as a simple table

na(n)
15
211
39
47
513
611
713
823
919
1017
1125
1223
1325
1435
1531
1629
1737
1843
1938
2037
2147
2243
2344
2447
2550
2653
2755
2858
2959
3067
3173
3266
3361
3470
3567
3669
3773
3874
3983
4079
4177
4285
4391
4489
4592
46103
4798
4894
4995
5097
51106
52103
53105
54109
55110
56119
57115
58113
59115
60118
61127
62133
63131
64130
65127

[5,11,9,7,13,11,13,23,19,17,25,23,25,35,31,29,37,
 43,38,37,47,43,44,47,50,53,55,58,59,67,73,66,61,
 70,67,69,73,74,83,79,77,85,91,89,92,103,98,94,95,
 97,106,103,105,109,110,119,115,113,115,118,127,
 133,131,130,127]