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A005257 as a simple table

n a(n)
1 2
2 3
3 5
4 9
5 17
6 33
7 64
8 126
9 249
10 495
11 984
12 1962
13 3913
14 7815
15 15608
16 31194
17 62346
18 124650
19 249216
20 498348
21 996531
22 1992897
23 3985464
24 7970598
25 15940542
26 31880430
27 63759552
28 127517796
29 255032987
30 510063369
31 1020121528
32 2040237846
33 4080465294
34 8160920190

[2,3,5,9,17,33,64,126,249,495,984,1962,3913,7815,
 15608,31194,62346,124650,249216,498348,996531,
 1992897,3985464,7970598,15940542,31880430,
 63759552,127517796,255032987,510063369,1020121528,
 2040237846,4080465294,8160920190]

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Last modified October 18 14:32 EDT 2019. Contains 328161 sequences. (Running on oeis4.)