# A019141 (b-file synthesized from sequence entry)
3 2
4 0
5 0
6 0
7 0
8 0
9 28
10 80
11 248
12 392
13 1028
14 2068
15 5856
16 13680
17 38100
18 92984
19 245540
20 603684
21 1574300
22 3964632
23 10322772
24 26364256
25 68828932
26 177899356
27 465682524
28 1212526448
29 3182617560
30 8332944204
31 21932272556