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A147435 as a simple table

na(n)
11
21
31
41
51
613
721
857
9259
101017
114255
1225913
13160493
141488777
1511698881
16154711435
171737788683
1830091739925

[1,1,1,1,1,13,21,57,259,1017,4255,25913,160493,
 1488777,11698881,154711435,1737788683,30091739925]