# A013078 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 -6
4 27
5 -150
6 900
7 -5985
8 47565
9 -442260
10 4450950
11 -47868975
12 571153275
13 -7552695150
14 106248542400
15 -1572657211125
16 25057160753625
17 -430628407209000
18 7779251376146250
19 -146478623943526875