# A148756 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 28
5 77
6 328
7 1032
8 4561
9 15405
10 69863
11 247581
12 1139957
13 4191007
14 19505310
15 73723498
16 345996567
17 1336688246
18 6313660360
19 24830303768
20 117888042833
21 470535221695
22 2243426487708
23 9066875262306
24 43381843668078
25 177214005001044
26 850444498221412
27 3506406506099757
28 16870406935037750