# A203518 (b-file synthesized from sequence entry)
1 1
2 3
3 60
4 20160
5 259459200
6 329533940736000
7 102591687479575117824000
8 20251578856869019790329341542400000
9 6518596139761671764183992268499872995344384000000
10 8899914870403074273776879003081000194727401271025610417766400000000