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A259310 as a simple table

na(n)
12
2257
31297
4614657
5331777
6331777
7160001
8331777
99834497
105308417
118503057
125308417
139834497
1465610001
155308417
168503057
1740960001
1865610001
1929986577
20384160001
2140960001
22303595777
231049760001
2465610001
251944810001
263782742017
271944810001
281049760001

[2,257,1297,614657,331777,331777,160001,331777,
 9834497,5308417,8503057,5308417,9834497,65610001,
 5308417,8503057,40960001,65610001,29986577,
 384160001,40960001,303595777,1049760001,65610001,
 1944810001,3782742017,1944810001,1049760001]