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A248233 as a simple table

na(n)
12
23
35
46
57
69
710
812
913
1014
1116
1217
1319
1420
1521
1623
1724
1826
1927
2029
2130
2231
2333
2434
2536
2637
2738
2840
2941
3043
3144
3245
3347
3448
3550
3651
3753
3854
3955
4057
4158
4260
4361
4462
4564
4665
4767
4868
4970
5071
5172
5274
5375
5477
5578
5679
5781
5882
5984
6085
6186
6288
6389
6491
6592
6694

[2,3,5,6,7,9,10,12,13,14,16,17,19,20,21,23,24,26,
 27,29,30,31,33,34,36,37,38,40,41,43,44,45,47,48,
 50,51,53,54,55,57,58,60,61,62,64,65,67,68,70,71,
 72,74,75,77,78,79,81,82,84,85,86,88,89,91,92,94]