# A136661 (b-file synthesized from sequence entry)
0 1
1 30
2 645
3 12495
4 235305
5 4452840
6 86070600
7 1713927600
8 35318883600
9 754896542400
10 16751853518400
11 386036370720000
12 9235831629024000
13 229285008336384000
14 5902321642753536000
15 157423965566579712000