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A147436 as a simple table

na(n)
11
21
31
49
525
689
7611
86905
9105540
101741627
1142117698
121578103851
1382708302532
145707546949411

[1,1,1,9,25,89,611,6905,105540,1741627,42117698,
 1578103851,82708302532,5707546949411]