# A072130 (b-file synthesized from sequence entry)
1 0
2 1
3 5
4 14
5 37
6 99
7 260
8 681
9 1785
10 4674
11 12237
12 32039
13 83880
14 219601
15 574925
16 1505174
17 3940597
18 10316619
19 27009260
20 70711161
21 185124225
22 484661514
23 1268860317
24 3321919439
25 8696898000
26 22768774561
27 59609425685
28 156059502494