# A280622 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 2
4 0
5 20
6 40
7 182
8 3360
9 5320
10 165480
11 1193962
12 7681520
13 182657020
14 1028347320
15 21430373342
16 296385660480
17 2926954283120
18 74104327031560
19 836520209938322
20 16747875178596240
21 336576896391971620
22 4854838471934266200
23 128099320528299728902
24 2250302805832188984800
25 49372680864950984970520
26 1245420698064315926211240