# A149536 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 13
4 49
5 177
6 667
7 2543
8 10041
9 39539
10 158109
11 639433
12 2601015
13 10639159
14 43850367
15 181446123
16 753443505
17 3143865503
18 13160935401
19 55241186593
20 232610710411
21 981971030779
22 4153731301811
23 17610884293985
24 74817976680219
25 318387365734597
26 1357252694442173
27 5795165115392909