# A148649 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 24
5 60
6 247
7 715
8 3084
9 9635
10 42609
11 141161
12 634379
13 2191937
14 9980879
15 35608441
16 163723832
17 599346018
18 2776936507
19 10380342041
20 48399637454
21 184092697969
22 862840374845
23 3330600004842
24 15679193201333
25 61291929405811
26 289626719097346
27 1144675685938422
28 5426640919523208