# A208661 (b-file synthesized from sequence entry)
1 1
2 4
3 16
4 144
5 3072
6 160000
7 20736000
8 6776582400
9 5639493386240
10 12041750911647744
11 66367674777600000000
12 948747002032456704000000
13 35319813420678024297185280000
14 3435829941215659552226769213849600