# A363412 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 -12
4 -140
5 420
6 13692
7 -23744
8 -2366784
9 126000
10 641927440
11 1306329024
12 -252172135488
13 -1138135788608
14 135593735484480
15 999117715814400
16 -95707279587325952
17 -1013737882826462976
18 85873512374909086464
19 1217682899871358735360
20 -95486742904897158097920