# A354335 (b-file synthesized from sequence entry)
0 1
1 2
2 24
3 720
4 4480
5 518400
6 479001600
7 29059430400
8 20922789888000
9 6402373705728000
10 810967336058880000
11 1124000727777607680000
12 88635485961891348480000
13 14936720782466875392000000
14 27717122237428532772864000000
15 265252859812191058636308480000000