# A375688 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 3
4 56
5 270
6 4824
7 44520
8 866816
9 12195792
10 267873120
11 5073187680
12 126754229568
13 2999710359360
14 85061489235072
15 2400155295632640
16 76724104598031360
17 2502434971473937920
18 89428428468644493312
19 3300036525511418327040