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A058309 as a simple table

na(n)
00
11
25
331
4222
51807
616485
7166657
81849712
922363201
10292571325
114118361751
1262067997590
13997206323191
1417014575491837
15307259565176257
165854946313840720
17117406185841990657
182471384848995644517
1954487872863746170031
201255692460715157555230

[0,1,5,31,222,1807,16485,166657,1849712,22363201,
 292571325,4118361751,62067997590,997206323191,
 17014575491837,307259565176257,5854946313840720,
 117406185841990657,2471384848995644517,
 54487872863746170031,1255692460715157555230]