# A012470 (b-file synthesized from sequence entry)
0 0
1 1
2 -1
3 -2
4 6
5 13
6 -225
7 530
8 8540
9 -65579
10 -650565
11 13899070
12 -8281878
13 -2388363655
14 18379145603
15 516826612354
16 -11083263907560
17 -64702488848279
18 5027641615912599
19 -24199820388513346