# A325138 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 45
4 320
5 2730
6 27054
7 304584
8 3832688
9 53233272
10 808045560
11 13297113720
12 235635543912
13 4471304008704
14 90415029604704
15 1940195561267880
16 44021278940004480
17 1052672670160355520
18 26454200168941936704
19 696874344218429604480
20 19198703924579071278720