# A056346 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 0
6 60
7 1080
8 11970
9 105840
10 821952
11 5874480
12 39713550
13 258136200
14 1631273220
15 10096734312
16 61536377700
17 370710950400
18 2213749658880
19 13132080672480
20 77509456944318
21 455754569692680