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A331901 as a simple table

na(n)
11
21
33
43
51
63
725
89
961
1091
1199
12151
13901
14303
151759
163379
175239
184713
198227
2012901
2112537
2223059
2365239
24159421
25232369
26489817
27351237
28726295
29564363
301101883
312517865
326916027
3311825821
344942227
3527166753
3621280053
3739547957
3852630273
39113638975

[1,1,3,3,1,3,25,9,61,91,99,151,901,303,1759,3379,
 5239,4713,8227,12901,12537,23059,65239,159421,
 232369,489817,351237,726295,564363,1101883,
 2517865,6916027,11825821,4942227,27166753,
 21280053,39547957,52630273,113638975]