# A032179 (b-file synthesized from sequence entry)
1 3
2 9
3 54
4 486
5 5832
6 87480
7 1574640
8 33067440
9 793618560
10 21427701120
11 642831033600
12 21213424108800
13 763683267916800
14 29783647448755200
15 1250913192847718400
16 56291093678147328000
17 2701972496551071744000
18 137800597324104658944000
19 7441232255501651582976000