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A166456 as a simple table

n a(n)
0 1
1 2
2 6
3 12
4 30
5 60
6 124
7 248
8 510
9 1020
10 2044
11 4088
12 8188
13 16376
14 32760
15 65520
16 131070
17 262140
18 524284
19 1048568
20 2097148
21 4194296
22 8388600
23 16777200
24 33554428
25 67108856
26 134217720
27 268435440
28 536870904
29 1073741808
30 2147483632
31 4294967264
32 8589934590
33 17179869180

[1,2,6,12,30,60,124,248,510,1020,2044,4088,8188,
 16376,32760,65520,131070,262140,524284,1048568,
 2097148,4194296,8388600,16777200,33554428,
 67108856,134217720,268435440,536870904,1073741808,
 2147483632,4294967264,8589934590,17179869180]

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Last modified April 24 13:24 EDT 2024. Contains 371955 sequences. (Running on oeis4.)