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A220403 as a simple table

na(n)
12
217
3122
4720
54304
625391
7150079
8884793
95205467
1030603312
11179828144
121056663902
136208358851
1436476199327
15214305557200
161259086948475
177397361356851
1843460791661461
19255339657788151
201500164308002762

[2,17,122,720,4304,25391,150079,884793,5205467,
 30603312,179828144,1056663902,6208358851,
 36476199327,214305557200,1259086948475,
 7397361356851,43460791661461,255339657788151,
 1500164308002762]