# A012574 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 -3
4 4
5 -20
6 278
7 -2079
8 12024
9 -102024
10 1526202
11 -21144915
12 254194620
13 -3422013660
14 60148579710
15 -1146224919735
16 21194144971440
17 -407432463085200
18 8837992445168370
19 -209438776595814435
20 5103026808528257460
21 -128021892811081933860