# A038033 (b-file synthesized from sequence entry)
3 6
4 24
5 180
6 1320
7 11130
8 103824
9 1067976
10 12014640
11 146845710
12 1938363240
13 27489515196
14 416924313624
15 6734931220290
16 115455963776160
17 2093601476474640
18 40040128237577184
19 805513168073611926