# A054581 (b-file synthesized from sequence entry)
1 0
2 1
3 1
4 1
5 2
6 5
7 12
8 39
9 136
10 529
11 2171
12 9368
13 41534
14 188942
15 874906
16 4115060
17 19602156
18 94419351
19 459183768
20 2252217207
21 11130545494
22 55382155396
23 277255622646
24 1395731021610
25 7061871805974
26 35896206800034
27 183241761631584