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A199656 as a simple table

na(n)
11
21
33
41
57
619
71
815
965
10175
111
1231
13211
14781
152101
161
1763
18665
193367
2011529
2131031
221
23127
242059
2514197
2661741
27201811
28543607
291
30255
316305
3258975
33325089
341288991
354085185
3611012415

[1,1,3,1,7,19,1,15,65,175,1,31,211,781,2101,1,63,
 665,3367,11529,31031,1,127,2059,14197,61741,
 201811,543607,1,255,6305,58975,325089,1288991,
 4085185,11012415]