# A151439 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 7
4 22
5 74
6 269
7 1022
8 3987
9 15897
10 64787
11 268685
12 1130049
13 4810797
14 20700879
15 89918115
16 393811281
17 1737451533
18 7716025961
19 34470611627
20 154822298289
21 698772455153
22 3167909310263
23 14420624239207
24 65891331074973
25 302120467333277
26 1389723243292295
27 6411702376827157
28 29663748424179837