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A199403 as a simple table

n a(n)
1 1
2 0
3 3
4 6
5 13
6 24
7 51
8 102
9 205
10 408
11 819
12 1638
13 3277
14 6552
15 13107
16 26214
17 52429
18 104856
19 209715
20 419430
21 838861
22 1677720
23 3355443
24 6710886
25 13421773
26 26843544
27 53687091
28 107374182
29 214748365
30 429496728
31 858993459
32 1717986918
33 3435973837
34 6871947672
35 13743895347

[1,0,3,6,13,24,51,102,205,408,819,1638,3277,6552,
 13107,26214,52429,104856,209715,419430,838861,
 1677720,3355443,6710886,13421773,26843544,
 53687091,107374182,214748365,429496728,858993459,
 1717986918,3435973837,6871947672,13743895347]

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Last modified June 24 12:30 EDT 2021. Contains 345416 sequences. (Running on oeis4.)