# A166896 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 16
5 45
6 142
7 459
8 1508
9 5122
10 17787
11 62649
12 223971
13 811339
14 2970032
15 10974150
16 40893393
17 153512844
18 580082454
19 2205046961
20 8427087958
21 32362949488
22 124837337235
23 483508287359
24 1879669861074
25 7332469937755