# A248603 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 19
5 56
6 186
7 615
8 2127
9 7467
10 26720
11 96801
12 354901
13 1313293
14 4900266
15 18413166
16 69620351
17 264673536
18 1011100541
19 3879382837
20 14942671683
21 57760251344
22 223988614094
23 871159201568
24 3397330833310
25 13281696243924
26 52042973504510
27 204357290336561
28 804029764090404