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A144280 as a simple table

na(n)
11
23
31
421
53
61
7231
830
93
101
113465
12294
1330
143
151
1665835
174599
18321
1930
203
211
221514205
2381081
244788
25321
2630
273
281
2940883535
301837836
3184483
324869
33321
3430
353
361
371267389585
3847609100
391892835
4085050
414869
42321
4330
443
451
4644358635475
471449052605
4848681864

[1,3,1,21,3,1,231,30,3,1,3465,294,30,3,1,65835,
 4599,321,30,3,1,1514205,81081,4788,321,30,3,1,
 40883535,1837836,84483,4869,321,30,3,1,1267389585,
 47609100,1892835,85050,4869,321,30,3,1,
 44358635475,1449052605,48681864]