# A012701 (b-file synthesized from sequence entry)
0 2
1 -3
2 16
3 -50
4 128
5 756
6 -20064
7 298656
8 -3561408
9 38990160
10 -310756800
11 467943840
12 66887172480
13 -2183463747360
14 51505489029120
15 -1001091175633920
16 15963926463621120
17 -153477175865587200