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A002561 as a simple table

na(n)
-10
01
12
233
3244
41025
53126
67777
716808
832769
959050
10100001
11161052
12248833
13371294
14537825
15759376
161048577
171419858
181889569
192476100
203200001
214084102
225153633
236436344
247962625
259765626
2611881377
2714348908
2817210369
2920511150
3024300001
3128629152
3233554433

[0,1,2,33,244,1025,3126,7777,16808,32769,59050,
 100001,161052,248833,371294,537825,759376,1048577,
 1419858,1889569,2476100,3200001,4084102,5153633,
 6436344,7962625,9765626,11881377,14348908,
 17210369,20511150,24300001,28629152,33554433]