# A013293 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 -3
5 40
6 -250
7 1008
8 -5887
9 56880
10 -263724
11 -1848000
12 36228093
13 -377490984
14 7141572490
15 -132772794000
16 1495810787297
17 -10978685025568
18 115616765332680
19 -1113424428155904
20 -36631866029794659