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A289969 as a simple table

n a(n)
0 1
1 2
2 6
3 15
4 31
5 60
6 124
7 255
8 511
9 1022
10 2046
11 4095
12 8191
13 16358
14 32742
15 65535
16 131071
17 262015
18 524159
19 1048455
20 2097031
21 4194168
22 8388472
23 16777095
24 33554311
25 67107704
26 134216568
27 268435335
28 536870791
29 1073741816
30 2147483640
31 4294967239
32 8589934535

[1,2,6,15,31,60,124,255,511,1022,2046,4095,8191,
 16358,32742,65535,131071,262015,524159,1048455,
 2097031,4194168,8388472,16777095,33554311,
 67107704,134216568,268435335,536870791,1073741816,
 2147483640,4294967239,8589934535]

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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)