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A094017 as a simple table

na(n)
12
23
34
45
55
67
710
810
97
109
117
125
1313
1415
1515
1615
1717
1817
1915
2017
2118
2217
2329
2421
2517
2628
2720

[2,3,4,5,5,7,10,10,7,9,7,5,13,15,15,15,17,17,15,
 17,18,17,29,21,17,28,20]