# A335388 (b-file synthesized from sequence entry)
1 1
2 6
3 140
4 672
5 30240
6 332640
7 2178540
8 17428320
9 163390500
10 191711520
11 326781000
12 1307124000
13 2701389600
14 8104168800
15 14378364000
16 40520844000
17 1175104476000
18 7131668544000
19 49921679808000