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A274932 as a simple table

na(n)
1529
2729
36889
412769
5162409
6644809
7851929
81261129
947969476
1064048009
11317837584
121600240009
132822053129
1424421563076
1540001200009
1684290347584
17107667328129
18145381301521
19160002400009
20437766166321
21788815751409

[529,729,6889,12769,162409,644809,851929,1261129,
 47969476,64048009,317837584,1600240009,2822053129,
 24421563076,40001200009,84290347584,107667328129,
 145381301521,160002400009,437766166321,
 788815751409]