# A012969 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 -6
4 19
5 -140
6 910
7 -5250
8 39925
9 -414360
10 4244200
11 -42242750
12 500292775
13 -7036001700
14 98944220050
15 -1395690728250
16 22347132003625
17 -399376247582000
18 7158271817183500
19 -130527261318021750