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A144279 as a simple table

na(n)
11
23
31
421
53
61
7231
821
99
103
111
123465
13231
1463
1521
169
173
181
1965835
203465
21693
22441
23231
2463
2527
2621
279
283
291
301514205
3165835
3210395
334851
343465
35693
36441
37189
38231
3963
4027
4121
429
433
441
4540883535
461514205
47197505
4872765
4953361
5065835
5110395
524851
532079
541323
553465

[1,3,1,21,3,1,231,21,9,3,1,3465,231,63,21,9,3,1,
 65835,3465,693,441,231,63,27,21,9,3,1,1514205,
 65835,10395,4851,3465,693,441,189,231,63,27,21,9,
 3,1,40883535,1514205,197505,72765,53361,65835,
 10395,4851,2079,1323,3465]