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A042271 as a simple table

na(n)
01
11
23
37
431
5131
62127
72258
822449
947156
1069605
11882416
124481685
135364101
149845786
1515209887
1640265560
1755475447
18206691901
19262167348
20468859249
211668745095
222137604344
235943953783
248081558127
2514025511910
2622107070037
27124560862095
281516837415177

[1,1,3,7,31,131,2127,2258,22449,47156,69605,
 882416,4481685,5364101,9845786,15209887,40265560,
 55475447,206691901,262167348,468859249,1668745095,
 2137604344,5943953783,8081558127,14025511910,
 22107070037,124560862095,1516837415177]