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A185645 as a simple table

na(n)
11
21
31
41
53
65
710
833
9153
101060
117337
1251434
13440728
143587067
1528498105
16271208386
173014400869
1835358507494

[1,1,1,1,3,5,10,33,153,1060,7337,51434,440728,
 3587067,28498105,271208386,3014400869,35358507494]