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A092431 as a simple table

na(n)
12
29
335
4135
5527
62079
78255
832895
9131327
10524799
112098175
128390655
1333558527
14134225919
15536887295
162147516415
178590000127
1834359869439
19137439215615
20549756338175
212199024304127
228796095119359
2335184376283135
24140737496743935
25562949970198527

[2,9,35,135,527,2079,8255,32895,131327,524799,
 2098175,8390655,33558527,134225919,536887295,
 2147516415,8590000127,34359869439,137439215615,
 549756338175,2199024304127,8796095119359,
 35184376283135,140737496743935,562949970198527]