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A224274 as a simple table

na(n)
11
27
355
4455
53876
633649
7296010
82629575
923535820
10211915132
111917334783
1217417133617
13158753389900
141451182990950
1513298522298180
16122131734269895
171123787895356412
1810358022441395860
1995615237915961100
20883829035553043580
218179808679272664720
2275788358475481302185

[1,7,55,455,3876,33649,296010,2629575,23535820,
 211915132,1917334783,17417133617,158753389900,
 1451182990950,13298522298180,122131734269895,
 1123787895356412,10358022441395860,
 95615237915961100,883829035553043580,
 8179808679272664720,75788358475481302185]