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A211566 as a simple table

na(n)
1877
24139
320891
4106133
5503295
62134122
78016373
826869727
981381744
10225620777
11579251337
121390969632
133150473373
146777961885
1513933402774
1627505504247
1752363544091
1896485126179
19172610924931
20300625072411

[877,4139,20891,106133,503295,2134122,8016373,
 26869727,81381744,225620777,579251337,1390969632,
 3150473373,6777961885,13933402774,27505504247,
 52363544091,96485126179,172610924931,300625072411]