# A013495 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 -4
4 9
5 -48
6 385
7 -2420
8 17297
9 -170688
10 1760289
11 -18395012
12 219987801
13 -2936841776
14 40948952993
15 -606801250484
16 9752505856033
17 -166636197964032
18 2990053004436417
19 -56703580249101188