# A009495 (b-file synthesized from sequence entry)
0 1
1 -3
2 17
3 -259
4 961
5 8349
6 -420847
7 107714525
8 -291144191
9 -71679177795
10 -2546217250159
11 -1636072819714243
12 -8332868001077567
13 9423739309853690205
14 688800640548102542225
15 203496392515640478835997