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A147511 as a simple table

na(n)
11
21
31
41
51
61
71
89
915
1029
1157
12137
13413
141389
154485
1615371
1754209
18224739
191032991
205497929
2129140255
22171761393
231058704295
247315438183

[1,1,1,1,1,1,1,9,15,29,57,137,413,1389,4485,15371,
 54209,224739,1032991,5497929,29140255,171761393,
 1058704295,7315438183]