# A157306 (b-file synthesized from sequence entry)
0 1
1 1
2 -1
3 -5
4 23
5 151
6 -1249
7 -10961
8 122975
9 1380703
10 -18981121
11 -261461441
12 4220277887
13 69016559743
14 -1278668869633
15 -24212706029825
16 507099112447487
17 10908810091109887
18 -255195984676134913
19 -6145413122840501249