# A104723 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 2
4 4
5 10
6 18
7 42
8 80
9 168
10 330
11 682
12 1340
13 2730
14 5418
15 10910
16 21760
17 43690
18 87192
19 174762
20 349180
21 699006
22 1397418
23 2796202
24 5590960
25 11184800
26 22366890
27 44739072
28 89473020
29 178956970
30 357902670
31 715827882
32 1431633920
33 2863310846