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A147449 as a simple table

na(n)
11
21
31
41
51
61
71
81
91
101
111
121
133
143
157
167
1713
1813
1939
2039
21123
22123
23461
24461
252371
262371

[1,1,1,1,1,1,1,1,1,1,1,1,3,3,7,7,13,13,39,39,123,
 123,461,461,2371,2371]