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A251286 as a simple table

na(n)
122
271
3219
4701
52193
66980
721966
869681
9219860
10696284
112199557
126960357
1321999804
1469591126
15220014756
16695843558
172200194145
186958021138
1922001843859
2069577286765
21220014836192
22695749296057
232200100105526
246957283657381

[22,71,219,701,2193,6980,21966,69681,219860,
 696284,2199557,6960357,21999804,69591126,
 220014756,695843558,2200194145,6958021138,
 22001843859,69577286765,220014836192,695749296057,
 2200100105526,6957283657381]