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A146622 as a simple table

na(n)
11
21
31
41
51
61
71
83
95
1011
1117
1231
1367
14255
15681
162579
177475
1830835
19113699
20646479
212916183
2218956135
23100069407
24770834039
254965697461
2647266430445
27367691554109
284176001047493
2938902939183671

[1,1,1,1,1,1,1,3,5,11,17,31,67,255,681,2579,7475,
 30835,113699,646479,2916183,18956135,100069407,
 770834039,4965697461,47266430445,367691554109,
 4176001047493,38902939183671]