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A260401 as a simple table

na(n)
11
23
34
45
57
69
711
812
913
1015
1116
1217
1319
1420
1521
1623
1725
1827
1928
2029
2131
2232
2333
2435
2536
2637
2739
2841
2943
3044
3145
3247
3348
3449
3551
3652
3753
3855
3957
4059
4160
4261
4363
4464
4565
4667
4768
4869
4971
5073
5175
5276
5377
5479
5580
5681
5783
5884
5985
6087
6189
6291
6392
6493
6595
6696

[1,3,4,5,7,9,11,12,13,15,16,17,19,20,21,23,25,27,
 28,29,31,32,33,35,36,37,39,41,43,44,45,47,48,49,
 51,52,53,55,57,59,60,61,63,64,65,67,68,69,71,73,
 75,76,77,79,80,81,83,84,85,87,89,91,92,93,95,96]