# A012106 (b-file synthesized from sequence entry)
0 1
1 0
2 -4
3 80
4 5456
5 511360
6 83316416
7 18755459840
8 5535063173376
9 2088819464171520
10 981883326234254336
11 562564553455472742400
12 385997167840660261687296
13 312523332440480815021588480