# A012960 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 2
4 -11
5 -30
6 175
7 1010
8 -6135
9 -60670
10 374875
11 5719650
12 -35199875
13 -779710750
14 4687746375
15 145208599250
16 -836951243375
17 -35435177514750
18 191995883837875
19 10975003189933250
20 -54688433347786875