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A241191 as a simple table

na(n)
11
23
31
493
5145
6213
7289
8365
9260511
109645025
11395623447
1217017308303
13800016993275
14902324346127
152502504187659113
16152669617912106167
1710229758110750827711
18726365554791051924279
1953027901964339123037045
2057389311757677767147397

[1,3,1,93,145,213,289,365,260511,9645025,
 395623447,17017308303,800016993275,902324346127,
 2502504187659113,152669617912106167,
 10229758110750827711,726365554791051924279,
 53027901964339123037045,57389311757677767147397]