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A135720 as a simple table

na(n)
2561
31105
41729
575361
629341
7162401
8334153
91615681
103581761
11399001
12294409
13252601
141152271
15104569501
162508013
17178837201
186189121
1910267951
2010024561
2114469841
224461725581
23985052881
2419384289
2523382529
263828001
2790698401
2884350561
296733693
3017098369

[561,1105,1729,75361,29341,162401,334153,1615681,
 3581761,399001,294409,252601,1152271,104569501,
 2508013,178837201,6189121,10267951,10024561,
 14469841,4461725581,985052881,19384289,23382529,
 3828001,90698401,84350561,6733693,17098369]