# A027095 (b-file synthesized from sequence entry)
4 1
5 1
6 5
7 17
8 57
9 193
10 650
11 2173
12 7199
13 23619
14 76746
15 247103
16 788934
17 2499707
18 7866233
19 24603551
20 76538239
21 236960031
22 730506849
23 2243545795
24 6867375720
25 20958167581
26 63791696431
27 193708118293
28 586967142587
29 1775245686845