# A366777 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 24
5 60
6 240
7 1260
8 28224
9 241920
10 2181600
11 21621600
12 395176320
13 5915669760
14 87034409280
15 1321166246400
16 26242709391360
17 529649632512000
18 10741214992435200
19 221702803264051200
20 5187617452174233600
21 128491776028533657600