# A009416 (b-file synthesized from sequence entry)
0 0
1 1
2 -1
3 5
4 -12
5 49
6 -225
7 1301
8 -8848
9 69441
10 -616185
11 6095429
12 -66475596
13 792143793
14 -10238194057
15 142633278997
16 -2130537219840
17 33964965659649
18 -575573407212753
19 10331348137881349
20 -195807849389362540
21 3907452790559751857
22 -81892400673047263761
23 1798373345567005989781
24 -41294565798306731368272
25 989581607891834678407745