# A064311 (b-file synthesized from sequence entry)
0 1
1 1
2 -1
3 5
4 -25
5 141
6 -849
7 5349
8 -34825
9 232445
10 -1582081
11 10938709
12 -76616249
13 542472685
14 -3876400305
15 27919883205
16 -202480492905
17 1477306676445
18 -10836099051105
19 79861379898165
20 -591082795606425