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A078610 as a simple table

na(n)
11
22
33
49
515
616
717
8129
9129
10271
11256
121055
131025
142048
152049
1632769
1732769
1865537
1965536
20262144
21262144
22524289
23524288
244194307
254194311
268388609
278388608
2833554435
2933554433
3067108864
3167108865
322147483649
332147483649
344294967297

[1,2,3,9,15,16,17,129,129,271,256,1055,1025,2048,
 2049,32769,32769,65537,65536,262144,262144,524289,
 524288,4194307,4194311,8388609,8388608,33554435,
 33554433,67108864,67108865,2147483649,2147483649,
 4294967297]