# A165921 (b-file synthesized from sequence entry)
2 0
3 0
4 0
5 1
6 1
7 3
8 4
9 9
10 15
11 31
12 53
13 105
14 189
15 363
16 672
17 1285
18 2407
19 4599
20 8704
21 16641
22 31713
23 60787
24 116390
25 223696
26 429975
27 828495
28 1597440
29 3085465
30 5964488
31 11545611
32 22368256
33 43383477
34 84212475
35 163617801
36 318140816
37 619094385
38 1205595657
39 2349383715
40 4581280972
41 8939118925
42 17452532040
43 34093383807