# A019124 (b-file synthesized from sequence entry)
3 0
4 0
5 5
6 4
7 6
8 30
9 62
10 104
11 277
12 731
13 1522
14 3561
15 9588
16 22716
17 54535
18 143207
19 364357
20 918918
21 2397825
22 6267317
23 16310966
24 42883939
25 113324881
26 299365408
27 793031738
28 2107778450
29 5608613145
30 14943394298
31 39896372083