# A019104 (b-file synthesized from sequence entry)
3 0
4 1
5 4
6 2
7 6
8 24
9 26
10 88
11 244
12 438
13 1296
14 3420
15 7602
16 20290
17 53200
18 131606
19 343613
20 897170
21 2316702
22 6080004
23 15952862
24 41822692
25 110322734
26 291264926
27 770165747
28 2043437294
29 5430745528
30 14462130140
31 38604014259