# A205806 (b-file synthesized from sequence entry)
1 1
2 2
3 11
4 100
5 1269
6 20680
7 411655
8 9681040
9 262644825
10 8074470560
11 277410402675
12 10533370203200
13 438024379604525
14 19798139730512000
15 966408931916064975
16 50666524133429152000
17 2839464166814487200625
18 169393547843598544960000
19 10717798206604377757886875