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A007562 formatted as a simple table:

n a(n)
1 1
2 1
3 1
4 2
5 3
6 6
7 10
8 20
9 36
10 72
11 137
12 275
13 541
14 1098
15 2208
16 4521
17 9240
18 19084
19 39451
20 82113
21 171240
22 358794
23 753460
24 1587740
25 3353192
26 7100909
27 15067924
28 32044456
29 68272854
30 145730675
31 311575140
32 667221030
33 1430892924
34 3072925944

[1,1,1,2,3,6,10,20,36,72,137,275,541,1098,2208,
 4521,9240,19084,39451,82113,171240,358794,753460,
 1587740,3353192,7100909,15067924,32044456,
 68272854,145730675,311575140,667221030,1430892924,
 3072925944]

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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