# A013116 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 8
4 16
5 42
6 184
7 744
8 1152
9 -558
10 99744
11 924904
12 -5133696
13 -83024966
14 906195840
15 14896602184
16 -171321409536
17 -3277450732382
18 44275226644992
19 942900995465032
20 -14354506519279616
21 -338298547449554102