# A367778 (b-file synthesized from sequence entry)
1 0
2 1
3 6
4 40
5 198
6 910
7 3848
8 15492
9 59920
10 224917
11 824074
12 2960828
13 10466610
14 36498195
15 125801144
16 429284612
17 1452174984
18 4874940295
19 16254780970
20 53873727516
21 177594715034
22 582603630260
23 1902860189328
24 6190199896600
25 20064013907288
26 64815504118695
27 208739559416878
28 670345766842528