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A098353 as a simple table

na(n)
11
23
33
45
59
65
77
815
915
107
119
1221
1325
1421
159
1611
1727
1835
1935
2027
2111
2213
2333
2445
2549
2645
2733
2813
2915
3039
3155
3263
3363
3455
3539
3615
3717
3845
3965
4077
4181
4277
4365
4445
4517
4619
4751
4875
4991
5099
5199
5291
5375
5451
5519
5621
5757
5885
59105
60117
61121
62117
63105
6485
6557
6621

[1,3,3,5,9,5,7,15,15,7,9,21,25,21,9,11,27,35,35,
 27,11,13,33,45,49,45,33,13,15,39,55,63,63,55,39,
 15,17,45,65,77,81,77,65,45,17,19,51,75,91,99,99,
 91,75,51,19,21,57,85,105,117,121,117,105,85,57,21]