# A019087 (b-file synthesized from sequence entry)
3 0
4 2
5 2
6 7
7 8
8 21
9 31
10 91
11 180
12 554
13 1089
14 3213
15 6964
16 19472
17 44811
18 121353
19 291654
20 784152
21 1935599
22 5174638
23 13101147
24 34852054
25 89615140
26 238340564
27 618916852
28 1646032524
29 4310429063
30 11469565103