# A242651 (b-file synthesized from sequence entry)
0 0
1 -1
2 3
3 -10
4 40
5 -190
6 1050
7 -6620
8 46800
9 -365300
10 3103100
11 -28269800
12 271627200
13 -2691559000
14 26495469000
15 -238131478000
16 1394099824000
17 15194495654000
18 -936096296850000
19 29697351895900000
20 -819329864480400000
21 21683886333440500000
22 -570263312237604700000
23 15145164178973569000000