# A002880 (b-file synthesized from sequence entry)
6 1
7 0
8 1
9 1
10 2
11 2
12 9
13 11
14 37
15 79
16 249
17 671
18 2182
19 6692
20 22131
21 72405
22 243806
23 822788
24 2815119
25 9679205
26 33551192
27 116900081
28 409675567
29 1442454215
30 5102542680
31 18124571838
32 64634480340
33 231334873091
34 830828150081
35 2993489821771