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A004119 as a simple table

na(n)
01
14
27
313
425
549
697
7193
8385
9769
101537
113073
126145
1312289
1424577
1549153
1698305
17196609
18393217
19786433
201572865
213145729
226291457
2312582913
2425165825
2550331649
26100663297
27201326593
28402653185
29805306369
301610612737
313221225473
326442450945
3312884901889

[1,4,7,13,25,49,97,193,385,769,1537,3073,6145,
 12289,24577,49153,98305,196609,393217,786433,
 1572865,3145729,6291457,12582913,25165825,
 50331649,100663297,201326593,402653185,805306369,
 1610612737,3221225473,6442450945,12884901889]