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A070864 as a simple table

na(n)
11
21
33
43
53
65
73
85
95
105
117
125
137
145
157
167
177
189
197
209
217
229
237
249
259
269
2711
289
2911
309
3111
329
3311
349
3511
3611
3711
3813
3911
4013
4111
4213
4311
4413
4511
4613
4711
4813
4913
5013
5115
5213
5315
5413
5515
5613
5715
5813
5915
6013
6115
6213
6315
6415
6515
6617
6715
6817
6915
7017
7115
7217
7315
7417
7515
7617
7715
7817
7915

[1,1,3,3,3,5,3,5,5,5,7,5,7,5,7,7,7,9,7,9,7,9,7,9,
 9,9,11,9,11,9,11,9,11,9,11,11,11,13,11,13,11,13,
 11,13,11,13,11,13,13,13,15,13,15,13,15,13,15,13,
 15,13,15,13,15,15,15,17,15,17,15,17,15,17,15,17,
 15,17,15,17,15]