# A002703 (b-file synthesized from sequence entry)
3 0
4 0
5 0
6 2
7 6
8 14
9 24
10 46
11 88
12 162
13 300
14 562
15 1056
16 1982
17 3742
18 7082
19 13438
20 25574
21 48768
22 93198
23 178480
24 342392
25 657918
26 1266202
27 2440318
28 4709374
29 9099504
30 17602322
31 34087010
32 66076414
33 128207976
34 248983550
35 483939976
36 941362694
37 1832519262
38 3569842946
39 6958934352