# A365244 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 6
5 17
6 48
7 144
8 449
9 1422
10 4568
11 14893
12 49139
13 163665
14 549570
15 1858754
16 6326343
17 21651064
18 74462327
19 257219221
20 892047965
21 3104749126
22 10841192392
23 37967942203
24 133333407639
25 469405472729
26 1656383420850
27 5857371543403
28 20754268304707