# A013317 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 -1
4 -24
5 -123
6 2
7 5987
8 54544
9 66441
10 -4948798
11 -71261177
12 -226393992
13 9534896269
14 201964922434
15 1166083278955
16 -34861258001632
17 -1052810665903343
18 -9456771887276926
19 211545075206125327