# A013305 (b-file synthesized from sequence entry)
0 0
1 1
2 1
3 -1
4 -1
5 -5
6 503
7 521
8 -13
9 -827
10 -1812469
11 44303839
12 9150959
13 17949817
14 -17645163013
15 -256103154817
16 128934425819
17 869866425977
18 7718787745279031
19 -657691477236554437
20 -23770118746323659
21 9983376979312685189
22 15480320293784856319969
23 240884767523727873137
24 -3694316464734123751573
25 -12325434071961822974423