# A113289 (b-file synthesized from sequence entry)
0 1
1 -1
2 4
3 -15
4 36
5 -119
6 302
7 -911
8 2440
9 -7199
10 20186
11 -60359
12 177204
13 -546615
14 1683286
15 -5401759
16 17456128
17 -58447151
18 197925490
19 -691264279
20 2446636396
21 -8897012871
22 32811147054
23 -123933345455
24 474792813176
25 -1858243857599
26 7375013350282
27 -29840434526951