# A271944 (b-file synthesized from sequence entry)
0 0
1 2
2 4
3 22
4 56
5 250
6 732
7 2926
8 9264
9 34866
10 115316
11 419846
12 1422824
13 5086122
14 17471692
15 61823966
16 213983072
17 752927074
18 2616950756
19 9179311350
20 31978941080
21 111975792474
22 390606950844
23 1366410142030
24 4769896907152
25 16676981234578
26 58239643256916