# A019196 (b-file synthesized from sequence entry)
3 0
4 0
5 4
6 6
7 8
8 22
9 60
10 102
11 262
12 694
13 1564
14 3552
15 9430
16 23423
17 57108
18 144774
19 374118
20 953824
21 2460356
22 6427240
23 16851190
24 44243785
25 117119492
26 311098391
27 828359180
28 2211105633
29 5921156854
30 15876753164
31 42641417130