# A059831 (b-file synthesized from sequence entry)
0 0
1 -2
2 -4
3 -20
4 -252
5 -5610
6 -187944
7 -8760272
8 -540315160
9 -42535905530
10 -4158250120140
11 -493938370048692
12 -70043599065844404
13 -11684931733886455730
14 -2264985487707963662992
15 -504752888883221450120000
16 -128137017404994234514023024