# A373134 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 12
5 60
6 300
7 1260
8 5096
9 19656
10 73800
11 270600
12 974292
13 3454308
14 12090260
15 41850900
16 143489040
17 487862736
18 1646537040
19 5520741840
20 18402473180
21 61018726860
22 201361799100
23 661617339900
24 2165293112952
25 7060738411800
26 22947399839000
27 74349575478360
28 240206320776996
29 773998144725876