# A071214 (b-file synthesized from sequence entry)
2 1
3 5
4 46
5 614
6 10716
7 230712
8 5903472
9 174942000
10 5890370400
11 222069752640
12 9265980286080
13 423888544154880
14 21094789126924800
15 1134492559101619200
16 65567415318776985600
17 4052502049455940147200
18 266725354163752808755200
19 18624661769541550593024000