# A149399 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 51
5 170
6 767
7 2865
8 13303
9 52106
10 246262
11 999415
12 4781050
13 19881284
14 95906783
15 406016883
16 1970864990
17 8460785652
18 41264143733
19 179101755477
20 876723078894
21 3839561286219
22 18850403902895
23 83169160694236
24 409293995669836
25 1817149685976593
26 8960144246683395
27 39993339632768805