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A147005 as a simple table

na(n)
11
21
31
41
53
61
75
81
98
101
1160
127
13328
1421
152111
1677
1721687
18479
19274683
203600
214419391

[1,1,1,1,3,1,5,1,8,1,60,7,328,21,2111,77,21687,
 479,274683,3600,4419391]