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A077313 as a simple table

n a(n)
1 3
2 7
3 19
4 31
5 79
6 127
7 199
8 499
9 1249
10 1279
11 1999
12 4999
13 5119
14 8191
15 12799
16 20479
17 31249
18 49999
19 51199
20 79999
21 81919
22 131071
23 199999
24 524287
25 799999
26 1249999
27 1310719
28 3124999
29 3276799
30 4999999
31 7812499
32 12499999
33 19999999
34 20479999

[3,7,19,31,79,127,199,499,1249,1279,1999,4999,
 5119,8191,12799,20479,31249,49999,51199,79999,
 81919,131071,199999,524287,799999,1249999,1310719,
 3124999,3276799,4999999,7812499,12499999,19999999,
 20479999]

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Last modified April 20 04:42 EDT 2019. Contains 322294 sequences. (Running on oeis4.)