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A186107 as a simple table

na(n)
11
21
31
41
53
67
73
815
985
10173
11119
12961
13663
148045
1517637
1651033
1754475
18312455
19663535
20950235
215936673
221684037
2339993895
2487986917
25128989251
26205059181
27949737339
282861515293
29400296173
3019018424205

[1,1,1,1,3,7,3,15,85,173,119,961,663,8045,17637,
 51033,54475,312455,663535,950235,5936673,1684037,
 39993895,87986917,128989251,205059181,949737339,
 2861515293,400296173,19018424205]