# A012618 (b-file synthesized from sequence entry)
0 0
1 2
2 4
3 350
4 7208
5 1520218
6 106485740
7 38051376246
8 6123846322896
9 3217389043510578
10 964215477538459732
11 692917532440212444686
12 338776184246581290006520
13 318786053587029917056642186