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A147135 as a simple table

na(n)
11
21
31
41
51
61
71
81
93
109
1119
1233
1359
14157
15473
161581
175917
1823197
1994123
20435079
212125669

[1,1,1,1,1,1,1,1,3,9,19,33,59,157,473,1581,5917,
 23197,94123,435079,2125669]