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A178596 as a simple table

na(n)
11
22
33
44
55
66
78
810
911
1012
1113
1214
1316
1417
1518
1619
1720
1821
1923
2025
2126
2227
2328
2429

[1,2,3,4,5,6,8,10,11,12,13,14,16,17,18,19,20,21,
 23,25,26,27,28,29]