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A102029 as a simple table

n a(n)
1 4
2 6
3 14
4 15
5 55
6 95
7 247
8 447
9 511
10 1535
11 2047
12 7167
13 12287
14 32255
15 49151
16 98303
17 196607
18 393215
19 983039
20 1572863
21 3145727
22 6291455
23 8388607
24 33423359
25 50331647
26 117440511
27 201326591
28 528482303
29 805306367
30 1879048191
31 3221225471

[4,6,14,15,55,95,247,447,511,1535,2047,7167,12287,
 32255,49151,98303,196607,393215,983039,1572863,
 3145727,6291455,8388607,33423359,50331647,
 117440511,201326591,528482303,805306367,
 1879048191,3221225471]

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Last modified February 23 07:24 EST 2020. Contains 332159 sequences. (Running on oeis4.)