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A070763 as a simple table

na(n)
12
23
34
47
59
616
721
825
931
1064
1181
1293
13127
14217
15289
16381
17400
18651
19729
20889
211681
222401
232667
243481
253937
264096
275041
287921
298191
3010201
3111811
3215625
3317161
3424573
3527559
3627889
3728561
3829929
3957337
4065536
4182677
4283521
4385849

[2,3,4,7,9,16,21,25,31,64,81,93,127,217,289,381,
 400,651,729,889,1681,2401,2667,3481,3937,4096,
 5041,7921,8191,10201,11811,15625,17161,24573,
 27559,27889,28561,29929,57337,65536,82677,83521,
 85849]