# A019067 (b-file synthesized from sequence entry)
3 0
4 0
5 4
6 5
7 6
8 31
9 64
10 139
11 378
12 744
13 1698
14 4181
15 8772
16 20390
17 48362
18 110784
19 267832
20 655285
21 1620786
22 4118867
23 10563612
24 27476768
25 72198838
26 190698257
27 506006608
28 1345521862
29 3579314908
30 9520710621