# A278691 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 2
5 4
6 9
7 22
8 60
9 176
10 565
11 1980
12 7528
13 30843
14 135248
15 630004
16 3097780
17 15991395
18 86267557
19 484446620
20 2822677523
21 17017165987