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A086424 as a simple table

na(n)
11
22
34
411
525
664
7171
8569
93406
1027697
11243374
121759619
1328381401
14222323189
153416307938
1626838745347

[1,2,4,11,25,64,171,569,3406,27697,243374,1759619,
 28381401,222323189,3416307938,26838745347]