# A217549 (b-file synthesized from sequence entry)
0 0
1 -1
2 21
3 85
4 365
5 -5707
6 -24935
7 -108872
8 1713705
9 7480420
10 32652893
11 -513913649
12 -2243303605
13 -9792325686
14 154118686736
15 672748988550
16 2936640671285
17 -46218967738367
18 -201752069488280
19 -880675175822422
20 13860700755359325
21 60503840705600655
22 264107479466296733