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A120516 as a simple table

na(n)
11
24
35
49
510
611
713
814
915
1020
1121
1222
1324
1425
1526
1628
1729
1830
1933
2034
2135
2237
2338
2439
2541
2642
2743
2849
2950
3051
3153
3254
3355
3457
3558
3659
3762
3863
3964
4066
4167
4268
4370
4471
4572
4675
4776
4877
4979
5080

[1,4,5,9,10,11,13,14,15,20,21,22,24,25,26,28,29,
 30,33,34,35,37,38,39,41,42,43,49,50,51,53,54,55,
 57,58,59,62,63,64,66,67,68,70,71,72,75,76,77,79,
 80]