# A171778 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 35
4 528
5 12014
6 380982
7 15981314
8 853810080
9 56442780072
10 4513359155448
11 428643194420880
12 47627449272834120
13 6113664230324396472
14 896943833995915594080
15 149016039235377313171320