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A146465 as a simple table

na(n)
11
21
31
41
51
61
71
83
99
1019
1133
1277
13255
141039
154359
1618069
1781085
18437915
192749579
2020046895
21155332489
221345844489
2312832415197
24142867250585

[1,1,1,1,1,1,1,3,9,19,33,77,255,1039,4359,18069,
 81085,437915,2749579,20046895,155332489,
 1345844489,12832415197,142867250585]