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A074940 as a simple table

na(n)
12
25
36
47
58
611
714
815
916
1017
1118
1219
1320
1421
1522
1623
1724
1825
1926
2029
2132
2233
2334
2435
2538
2641
2742
2843
2944
3045
3146
3247
3348
3449
3550
3651
3752
3853
3954
4055
4156
4257
4358
4459
4560
4661
4762
4863
4964
5065
5166
5267
5368
5469
5570
5671
5772
5873
5974
6075
6176
6277
6378
6479
6580
6683
6786
6887
6988
7089
7192

[2,5,6,7,8,11,14,15,16,17,18,19,20,21,22,23,24,25,
 26,29,32,33,34,35,38,41,42,43,44,45,46,47,48,49,
 50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,
 66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,83,
 86,87,88,89,92]