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A256772 as a simple table

na(n)
12
23
34
47
59
637
739
867
973
10183
11216
121161
132622
142775
156240
1622078
1730384
18189385

[2,3,4,7,9,37,39,67,73,183,216,1161,2622,2775,
 6240,22078,30384,189385]