# A027486 (b-file synthesized from sequence entry)
1 1
2 3
3 23
4 330
5 7604
6 256620
7 11923260
8 729524880
9 56840099904
10 5493503695680
11 644870893060800
12 90366972897801600
13 14899694352066120960
14 2855250418022402400000
15 629258349435218754451200
16 158034681938560927788288000
17 44866854739192779425625292800