# A149565 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 13
4 59
5 197
6 921
7 3331
8 15865
9 60727
10 290267
11 1154275
12 5560547
13 22622223
14 109636859
15 454582257
16 2209362255
17 9300526153
18 45349547541
19 193067942897
20 943931822673
21 4058053450409
22 19874749597221
23 86155750783929
24 422686506792649
25 1844846909082093
26 9064441951114577
27 39801583197772329