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A083593 as a simple table

n a(n)
0 1
1 2
2 4
3 8
4 17
5 34
6 68
7 136
8 273
9 546
10 1092
11 2184
12 4369
13 8738
14 17476
15 34952
16 69905
17 139810
18 279620
19 559240
20 1118481
21 2236962
22 4473924
23 8947848
24 17895697
25 35791394
26 71582788
27 143165576
28 286331153
29 572662306
30 1145324612
31 2290649224

[1,2,4,8,17,34,68,136,273,546,1092,2184,4369,8738,
 17476,34952,69905,139810,279620,559240,1118481,
 2236962,4473924,8947848,17895697,35791394,
 71582788,143165576,286331153,572662306,1145324612,
 2290649224]

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Last modified December 13 12:49 EST 2018. Contains 318086 sequences. (Running on oeis4.)