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A102742 as a simple table

na(n)
13
25
37
441
515361
623041
726881
861441
987041
10163841
11544001
12604801
136684673
1414172161
15159318017
16446960641
171151139841
183208642561
1938126223361
20108905103361
21171727482881
22318093312001
23443069456129
24912680550401
251295536619521
261825696645121
272061584302081

[3,5,7,41,15361,23041,26881,61441,87041,163841,
 544001,604801,6684673,14172161,159318017,
 446960641,1151139841,3208642561,38126223361,
 108905103361,171727482881,318093312001,
 443069456129,912680550401,1295536619521,
 1825696645121,2061584302081]