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A017560 as a simple table

na(n)
081
150625
2531441
32313441
46765201
515752961
631640625
757289761
896059601
9151807041
10228886641
11332150625
12466948881
13639128961
14855036081
151121513121
161445900625
171836036801
182300257521

[81,50625,531441,2313441,6765201,15752961,
 31640625,57289761,96059601,151807041,228886641,
 332150625,466948881,639128961,855036081,
 1121513121,1445900625,1836036801,2300257521]