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A163665 as a simple table

na(n)
12
23
319
437
5719
61511
75443
869709
9386093
101907819
1110777931
1217819101
1318653749
1456125547
1560163267
1698911811
17272887613
18567611663
19989060309
202444540149

[2,3,19,37,719,1511,5443,69709,386093,1907819,
 10777931,17819101,18653749,56125547,60163267,
 98911811,272887613,567611663,989060309,2444540149]