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A241154 as a simple table

na(n)
11
21
31
41
51
65
75
85
95
105
119
129
139
149
1513
169
1713
1813
1917
2013
2117
2213
2317
2417
2521
2617
2721
2821
2921
3021
3125
3225
3325
3425
3525
3629
3729
3829
3929
4033
4129
4233
4333
4437
4533
4637
4733
4841
4937
5041
5137
5245
5337
5445
5541
5649
5741
5849
5941
6053
6145
6253
6345
6457
6545
6657
6749
6861
6949
7061
7149
7261
7353
7465
7553
7665
7757
7865
7957
8069
8161
8269
8361

[1,1,1,1,1,5,5,5,5,5,9,9,9,9,13,9,13,13,17,13,17,
 13,17,17,21,17,21,21,21,21,25,25,25,25,25,29,29,
 29,29,33,29,33,33,37,33,37,33,41,37,41,37,45,37,
 45,41,49,41,49,41,53,45,53,45,57,45,57,49,61,49,
 61,49,61,53,65,53,65,57,65,57,69,61,69,61]