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A181360 as a simple table

na(n)
01
11
23
37
419
547
6127
7330
8889
92378
106450
1117510
1247907
13131388
14362081
151000665
162774857
177714695
1821505455
1960084062
20168234804
21471977022
221326558625
233734804268
2410531738149
2529742332548
2684111212892
27238176473946
28675269414372
291916715819186

[1,1,3,7,19,47,127,330,889,2378,6450,17510,47907,
 131388,362081,1000665,2774857,7714695,21505455,
 60084062,168234804,471977022,1326558625,
 3734804268,10531738149,29742332548,84111212892,
 238176473946,675269414372,1916715819186]