# A214936 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 12
5 36
6 108
7 324
8 1296
9 5184
10 20736
11 82944
12 331776
13 1327104
14 5308416
15 21233664
16 106168320
17 530841600
18 2654208000
19 13271040000
20 66355200000
21 331776000000
22 1658880000000
23 8294400000000
24 41472000000000
25 207360000000000
26 1036800000000000
27 5184000000000000