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A248416 as a simple table

na(n)
11
24
31
46
54
61
77
87
97
101
1110
1211
1313
1413
151
1611
1713
1821
1925
2025
211
2213
2316
2425
2541
2649
2749
281
2916
3019
3131
3249
3381
3497
3597
361
3718
3821
3937
4061
4197
42161
43193
44193
451
4619
4725
4841
4973
50121
51193
52321
53385
54385
551
5621
5728
5849
5981
60145
61241
62385
63641
64769
65769
661
6724
6831
6955
7097
71161
72289
73481
74769
751281
761537
771537
781

[1,4,1,6,4,1,7,7,7,1,10,11,13,13,1,11,13,21,25,25,
 1,13,16,25,41,49,49,1,16,19,31,49,81,97,97,1,18,
 21,37,61,97,161,193,193,1,19,25,41,73,121,193,321,
 385,385,1,21,28,49,81,145,241,385,641,769,769,1,
 24,31,55,97,161,289,481,769,1281,1537,1537,1]