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A020698 as a simple table

na(n)
02
19
241
3187
4853
53891
617749
780963
8369317
91684659
107684661
1135053987
12159900613
13729395091
143327174229
1515177080963
1669231056357
17315801119859
181440543486581
196571115193187
2029974488992773
21136730214577491
22623702094901909
232845050045354563

[2,9,41,187,853,3891,17749,80963,369317,1684659,
 7684661,35053987,159900613,729395091,3327174229,
 15177080963,69231056357,315801119859,
 1440543486581,6571115193187,29974488992773,
 136730214577491,623702094901909,2845050045354563]