# A012776 (b-file synthesized from sequence entry)
0 0
1 1
2 -1
3 4
4 -6
5 13
6 75
7 -688
8 3444
9 17701
10 -627165
11 8927708
12 -77106810
13 67688905
14 13345186855
15 -307791747352
16 3673005693000
17 5260749482825
18 -1552250968018713
19 45434699608017268
20 -741230930507315470