# A018792 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 1
8 3
9 8
10 20
11 48
12 112
13 300
14 752
15 1712
16 3839
17 8507
18 18668
19 43437
20 98919
21 221527
22 478718
23 1027994
24 2196398
25 4811804
26 10446823
27 22508560
28 48207309
29 101582640
30 213430157
31 456774962
32 972054283