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A007916 as a simple table

na(n)
12
23
35
46
57
610
711
812
913
1014
1115
1217
1318
1419
1520
1621
1722
1823
1924
2026
2128
2229
2330
2431
2533
2634
2735
2837
2938
3039
3140
3241
3342
3443
3544
3645
3746
3847
3948
4050
4151
4252
4353
4454
4555
4656
4757
4858
4959
5060
5161
5262
5363
5465
5566
5667
5768
5869
5970
6071
6172
6273
6374
6475
6576
6677
6778
6879
6980
7082
7183

[2,3,5,6,7,10,11,12,13,14,15,17,18,19,20,21,22,23,
 24,26,28,29,30,31,33,34,35,37,38,39,40,41,42,43,
 44,45,46,47,48,50,51,52,53,54,55,56,57,58,59,60,
 61,62,63,65,66,67,68,69,70,71,72,73,74,75,76,77,
 78,79,80,82,83]