# A295870 (b-file synthesized from sequence entry)
0 1
1 12
2 660
3 48720
4 4005540
5 349260912
6 31626298704
7 2940502593600
8 278788387440420
9 26831860080682800
10 2613367831568654160
11 257012469788428710720
12 25479526081439438845200
13 2543092744417831625342400
14 255292245777771431285140800
15 25755871314484468746363582720