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A260108 as a simple table

na(n)
12
25
37
411
579
623
747
8769
959
1032831
1183
12125093
13107
143329
15167
167333
17179
1812473
19227
20268435711
21263
2226113
23347
24359
25383
2646489
27467
2856489
29479
3014706467
31503
3270549
3320797247
34563
35587
36102121
37126457
38719
39133669
40153313
41171049
42839
43863
44191449
45887

[2,5,7,11,79,23,47,769,59,32831,83,125093,107,
 3329,167,7333,179,12473,227,268435711,263,26113,
 347,359,383,46489,467,56489,479,14706467,503,
 70549,20797247,563,587,102121,126457,719,133669,
 153313,171049,839,863,191449,887]