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A020726 as a simple table

na(n)
01
127
2493
37599
4106645
51411431
617955757
7222093423
82690508229
932080473975
10377794514461
114405195463487
1250953884924853
13585473143132359
146690087028209805
1576090252032830991
16861988540696279717

[1,27,493,7599,106645,1411431,17955757,222093423,
 2690508229,32080473975,377794514461,4405195463487,
 50953884924853,585473143132359,6690087028209805,
 76090252032830991,861988540696279717]