# A105227 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 12
4 60
5 355
6 2380
7 17430
8 134190
9 1027656
10 6922146
11 21248073
12 -601744143
13 -20802115620
14 -480211746300
15 -9737801866650
16 -183103121602830
17 -3185750996194910
18 -48580593174777092
19 -515943195216679230
20 3196232280583478136
21 460669417734237239892