# A111811 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 10
4 88
5 1096
6 11856
7 -402480
8 -1891968
9 36024603264
10 359905478400
11 -53686393014816000
12 -644141701131494400
13 1790653231402788752593920
14 25068910772059830672353280
15 -1280832036591718248285105113241600