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A140750 as a simple table

na(n)
11
21
31
41
51
61
73
81
91
101
111
125
133
145
151
161
171
181
197
205
2113
225
237
241
251
261
271
289
297
3025
3113
3225
337
349
351
361
371
381
3911
409
4141
4225
4363
4425
4541
469
4711
481
491
501
511
5213
5311
5461
5541
56129
5763
58129
5941
6061
6111
6213
631
641

[1,1,1,1,1,1,3,1,1,1,1,5,3,5,1,1,1,1,7,5,13,5,7,1,
 1,1,1,9,7,25,13,25,7,9,1,1,1,1,11,9,41,25,63,25,
 41,9,11,1,1,1,1,13,11,61,41,129,63,129,41,61,11,
 13,1,1]