# A128242 (b-file synthesized from sequence entry)
3 0
4 0
5 1
6 1
7 5
8 16
9 66
10 266
11 1235
12 6350
13 37364
14 251106
15 1942085
16 17287710
17 177086792
18 2084120446
19 28125888087
20 434318629496
21 7657513894860