# A123016 (b-file synthesized from sequence entry)
1 1
2 1
3 4
4 0
5 32
6 -64
7 384
8 -1280
9 5632
10 -21504
11 88064
12 -348160
13 1400832
14 -5586944
15 22380544
16 -89456640
17 357957632
18 -1431568384
19 5726797824
20 -22906142720
21 91626668032
22 -366502477824
23 1466018299904
24 -5864056422400
25 23456259244032
26 -93824969867264
27 375300013686784