# A080073 (b-file synthesized from sequence entry)
0 1
1 1
2 0
3 -3
4 4
5 50
6 -264
7 -1638
8 25264
9 40896
10 -3357360
11 13380840
12 559239264
13 -7126367664
14 -98536058880
15 3137828374800
16 8293939695360
17 -1427422903584000
18 10789876955529216
19 666226173751955712
20 -14427332604300810240
21 -279534553922071445760