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A035280 as a simple table

na(n)
11
22
34
46
56
68
79
812
912
1012
1115
1215
1316
1418
1518
1620
1721
1824
1924
2024
2127
2228
2330
2430
2532
2633
2735
2836

[1,2,4,6,6,8,9,12,12,12,15,15,16,18,18,20,21,24,
 24,24,27,28,30,30,32,33,35,36]