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A052953 as a simple table

n a(n)
0 2
1 2
2 4
3 6
4 12
5 22
6 44
7 86
8 172
9 342
10 684
11 1366
12 2732
13 5462
14 10924
15 21846
16 43692
17 87382
18 174764
19 349526
20 699052
21 1398102
22 2796204
23 5592406
24 11184812
25 22369622
26 44739244
27 89478486
28 178956972
29 357913942
30 715827884
31 1431655766
32 2863311532

[2,2,4,6,12,22,44,86,172,342,684,1366,2732,5462,
 10924,21846,43692,87382,174764,349526,699052,
 1398102,2796204,5592406,11184812,22369622,
 44739244,89478486,178956972,357913942,715827884,
 1431655766,2863311532]

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Last modified May 14 06:13 EDT 2024. Contains 372528 sequences. (Running on oeis4.)