# A372003 (b-file synthesized from sequence entry)
0 1
1 3
2 -6
3 36
4 -216
5 1404
6 -9648
7 68904
8 -506304
9 3802464
10 -29055024
11 225142416
12 -1764900576
13 13970400480
14 -111506362560
15 896391836928
16 -7251109424640
17 58978357310592
18 -482049643011840
19 3957079727715840
20 -32609916223598592
21 269682253882186752