# A149091 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 8
4 31
5 83
6 309
7 977
8 3571
9 12395
10 45458
11 165876
12 617495
13 2316191
14 8773838
15 33493548
16 128840353
17 498456315
18 1941252054
19 7594394344
20 29871433149
21 117966578225
22 467857554197
23 1862361268887
24 7438937047067
25 29811320860773
26 119819502795074
27 482960010597006
28 1951744104721491