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A136417 as a simple table

na(n)
02
12
23
33
45
56
69
712
817
923
1033
1146
1265
1391
14129
15182
16257
17363
18513
19725
201025
211449
222049
232897
244097
255793
268193
2711586
2816385
2923171
3032769
3146341
3265537
3392682
34131073
35185364
36262145
37370728
38524289
39741456
401048577
411482911
422097153

[2,2,3,3,5,6,9,12,17,23,33,46,65,91,129,182,257,
 363,513,725,1025,1449,2049,2897,4097,5793,8193,
 11586,16385,23171,32769,46341,65537,92682,131073,
 185364,262145,370728,524289,741456,1048577,
 1482911,2097153]