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A266897 as a simple table

n a(n)
0 1
1 2
2 4
3 8
4 17
5 35
6 70
7 140
8 281
9 562
10 1125
11 2250
12 4500
13 9001
14 18003
15 36006
16 72012
17 144024
18 288049
19 576099
20 1152199
21 2304398
22 4608797
23 9217595
24 18435190
25 36870380
26 73740760
27 147481521
28 294963043
29 589926086
30 1179852173
31 2359704346
32 4719408693
33 9438817386

[1,2,4,8,17,35,70,140,281,562,1125,2250,4500,9001,
 18003,36006,72012,144024,288049,576099,1152199,
 2304398,4608797,9217595,18435190,36870380,
 73740760,147481521,294963043,589926086,1179852173,
 2359704346,4719408693,9438817386]

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Last modified August 8 23:02 EDT 2020. Contains 336300 sequences. (Running on oeis4.)