# A367967 (b-file synthesized from sequence entry)
0 0
1 0
2 3
3 27
4 126
5 462
6 1521
7 4761
8 14556
9 44028
10 132543
11 398199
12 1195290
13 3586698
14 10761069
15 32284341
16 96854328
17 290564472
18 871695099
19 2615087187
20 7845263670
21 23535793350
22 70607382633
23 211822150737
24 635466455316
25 1906399369332
26 5719198111671
27 17157594338991