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A086986 as a simple table

na(n)
13
24
37
48
59
610
712
813
916
1017
1119
1220
1321
1422
1524
1625
1726
1827
1928
2029
2130
2231
2333
2434
2535
2636
2737
2838
2939
3040
3141
3242
3344
3445
3546
3647
3748
3849
3950
4051
4152
4253
4354
4455
4556
4658
4759
4860
4961
5062
5163
5264
5365
5466
5567
5668
5769
5870
5971
6073
6175
6276
6377
6478
6581
6682
6783
6884
6985
7086
7187
7289

[3,4,7,8,9,10,12,13,16,17,19,20,21,22,24,25,26,27,
 28,29,30,31,33,34,35,36,37,38,39,40,41,42,44,45,
 46,47,48,49,50,51,52,53,54,55,56,58,59,60,61,62,
 63,64,65,66,67,68,69,70,71,73,75,76,77,78,81,82,
 83,84,85,86,87,89]