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A034738 as a simple table

n a(n)
1 1
2 3
3 6
4 12
5 20
6 42
7 70
8 144
9 270
10 540
11 1034
12 2112
13 4108
14 8274
15 16440
16 32928
17 65552
18 131418
19 262162
20 524880
21 1048740
22 2098206
23 4194326
24 8391024
25 16777300
26 33558564
27 67109418
28 134226120
29 268435484
30 536888520
31 1073741854
32 2147516736

[1,3,6,12,20,42,70,144,270,540,1034,2112,4108,
 8274,16440,32928,65552,131418,262162,524880,
 1048740,2098206,4194326,8391024,16777300,33558564,
 67109418,134226120,268435484,536888520,1073741854,
 2147516736]

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Last modified August 13 06:22 EDT 2020. Contains 336442 sequences. (Running on oeis4.)