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A147339 as a simple table

na(n)
11
21
31
41
51
61
71
81
911
1015
11183
12305
131851
143761
1535145
1675363
171670651
184265463
19180681913
20541465905
2130900571055
22107421245147
238457236647761
2434044967457309
254310491231691799

[1,1,1,1,1,1,1,1,11,15,183,305,1851,3761,35145,
 75363,1670651,4265463,180681913,541465905,
 30900571055,107421245147,8457236647761,
 34044967457309,4310491231691799]