# A013100 (b-file synthesized from sequence entry)
0 1
1 4
2 24
3 534
4 16520
5 1017914
6 66612612
7 8612481206
8 839464647792
9 223263066398386
10 20349154329810172
11 15355587487339427086
12 -408311328299061735320
13 2681720930486026740373066
14 -832148640269649203971185996
15 1101363338244005265784426750566