# A115981 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 0
5 1
6 5
7 17
8 49
9 126
10 303
11 694
12 1536
13 3312
14 7009
15 14619
16 30164
17 61732
18 125568
19 254246
20 513048
21 1032696
22 2074875
23 4163256
24 8345605
25 16717996
26 33473334
27 66998380
28 134067959
29 268233386
30 536599508
31 1073378850
32 2147000209