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A231991 as a simple table

na(n)
14
232
31024
480511
515594601
69716967198
717330552348004
886052358301456560
91193370539733163272100
1047736311347811120780540634
115427560264549933547128560973449
121747506522236821289436659004322720324

[4,32,1024,80511,15594601,9716967198,
 17330552348004,86052358301456560,
 1193370539733163272100,47736311347811120780540634,
 5427560264549933547128560973449,
 1747506522236821289436659004322720324]