# A032336 (b-file synthesized from sequence entry)
1 2
2 2
3 24
4 366
5 7980
6 212880
7 6974520
8 267915690
9 11862673620
10 594440826420
11 33270303029040
12 2057075448923880
13 139254109289895600
14 10243988810221846680
15 813714967541542706640