# A251184 (b-file synthesized from sequence entry)
0 1
1 6
2 60
3 1494
4 135960
5 53187306
6 90775495620
7 662696938144254
8 20254044105203565360
9 2548567387213968842106066
10 1305307745923414524904985640540
11 2701621925224675918174411993192242534
12 22497571753504120612543889146545487252194120
13 751859379104473999264213367292907652977053019173306