# A266913 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 12
5 5
6 180
7 315
8 2240
9 567
10 907200
11 51975
12 13305600
13 289575
14 80720640
15 212837625
16 3487131648000
17 2297295
18 64023737057280
19 14849255421
20 28963119144960000
21 17717861581875
22 140500090972200960000
23 16436269594119375
24 6204484017332394393600
25 40639128117328125