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A030297 as a simple table

na(n)
00
11
26
327
4124
5645
63906
727391
8219192
91972809
1019728190
11217010211
122604122676
1333853594957
14473950329594
157109254944135
16113748079106416
171933717344809361
1834806912206568822
19661331331924807979

[0,1,6,27,124,645,3906,27391,219192,1972809,
 19728190,217010211,2604122676,33853594957,
 473950329594,7109254944135,113748079106416,
 1933717344809361,34806912206568822,
 661331331924807979]