# A009666 (b-file synthesized from sequence entry)
0 0
1 2
2 8
3 8
4 -960
5 -24416
6 174976
7 55072384
8 2417174528
9 -157596298752
10 -36515570849792
11 -1639992400689152
12 545678443552096256
13 129227252689536917504
14 760653447239073103872
15 -6729535404906273785610240
16 -1588610710637517290637099008