# A099216 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 10
4 28
5 80
6 228
7 648
8 1840
9 5224
10 14832
11 42112
12 119568
13 339488
14 963904
15 2736800
16 7770560
17 22062848
18 62642752
19 177860736
20 504997632
21 1433833088
22 4071063296
23 11558916096
24 32819077376
25 93182771712
26 264572609536