# A013186 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 0
4 0
5 8
6 -48
7 392
8 -2240
9 20096
10 -147200
11 1754368
12 -16873472
13 241340032
14 -2769127424
15 44833033216
16 -593918959616
17 10840711614464
18 -164204798541824
19 3348758074142720
20 -57147730941444096