# A174198 (b-file synthesized from sequence entry)
1 0
2 1
3 3
4 8
5 20
6 50
7 128
8 326
9 838
10 2164
11 5613
12 14619
13 38200
14 100109
15 263002
16 692452
17 1826640
18 4826740
19 12773610
20 33850507
21 89815472
22 238573535
23 634359840
24 1688317073
25 4497222961
26 11988860360
27 31983701435
28 85383496739
29 228083043888