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A180744 as a simple table

na(n)
12
25
36
413
561
6275
7385
8510
93559
109131
1113075
1213829
1328530
1429929
1531555
1639862

[2,5,6,13,61,275,385,510,3559,9131,13075,13829,
 28530,29929,31555,39862]