# A148277 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 15
5 40
6 166
7 515
8 2213
9 7369
10 32560
11 114093
12 515590
13 1880721
14 8638894
15 32478869
16 150899429
17 580640925
18 2720303557
19 10663729858
20 50290667187
21 200199156959
22 949308160772
23 3828464284682
24 18236206007329
25 74365154506710
26 355561366366003
27 1463873706851744
28 7021416400795656