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A028756 as a simple table

na(n)
12
23
35
47
58
612
718
819
920
1022
1126
1227
1328
1429
1530
1632
1733
1834
1937
2039
2142

[2,3,5,7,8,12,18,19,20,22,26,27,28,29,30,32,33,34,
 37,39,42]