# A167750 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 9
5 20
6 45
7 102
8 231
9 524
10 1189
11 2699
12 6127
13 13910
14 31581
15 71702
16 162796
17 369622
18 839216
19 1905419
20 4326211
21 9822571
22 22301948
23 50636130
24 114968339
25 261033373
26 592671205
27 1345648489
28 3055268857
29 6936928864
30 15750162908