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A146287 as a simple table

na(n)
11
21
31
41
51
613
749
8205
9661
101997
1113307
1288591
13614455
146581035
1595397503
161522572859
1723440615715
18367710019427
198011532526037
20207007785752989
216626542824985383

[1,1,1,1,1,13,49,205,661,1997,13307,88591,614455,
 6581035,95397503,1522572859,23440615715,
 367710019427,8011532526037,207007785752989,
 6626542824985383]