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A005272 as a simple table

na(n)
21
32
46
526
6164
71529
821439
9461481
1015616226
11851607867
1276555549499
1311550559504086

[1,2,6,26,164,1529,21439,461481,15616226,
 851607867,76555549499,11550559504086]