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A293990 as a simple table

na(n)
01
13
23
35
47
59
69
711
813
915
1015
1117
1219
1321
1421
1523
1625
1727
1827
1929
2031
2133
2233
2335
2437
2539
2639
2741
2843
2945
3045
3147
3249
3351
3451
3553
3655
3757
3857
3959
4061
4163
4263
4365
4467
4569
4669
4771
4873
4975
5075
5177
5279
5381
5481
5583
5685
5787
5887
5989
6091
6193
6293

[1,3,3,5,7,9,9,11,13,15,15,17,19,21,21,23,25,27,
 27,29,31,33,33,35,37,39,39,41,43,45,45,47,49,51,
 51,53,55,57,57,59,61,63,63,65,67,69,69,71,73,75,
 75,77,79,81,81,83,85,87,87,89,91,93,93]