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A068842 as a simple table

na(n)
011
123
241
383
4163
53203
6641
71283
825601
951203
1010243
1120483
1240961
1381929
14163841
15327689
166553621
171310723
182621447
195242883
2010485767
2120971529
2241943049
23838860817
24167772161
25335544323
266710886407
271342177283

[11,23,41,83,163,3203,641,1283,25601,51203,10243,
 20483,40961,81929,163841,327689,6553621,1310723,
 2621447,5242883,10485767,20971529,41943049,
 838860817,167772161,335544323,6710886407,
 1342177283]