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A201866 as a simple table

na(n)
11
21
33
43
55
611
721
839
973
10129
11229
12407
13733
141335
152461
164549
178427
1815585
1928811
2053235
2198479
22182403
23338461
24628873
251169875
262177875
274056997
287561019
2914098931
3026303445
3149100159
3291702815
33171359391
34320357055
35599167829

[1,1,3,3,5,11,21,39,73,129,229,407,733,1335,2461,
 4549,8427,15585,28811,53235,98479,182403,338461,
 628873,1169875,2177875,4056997,7561019,14098931,
 26303445,49100159,91702815,171359391,320357055,
 599167829]