# A149096 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 8
4 33
5 85
6 368
7 1075
8 4794
9 15211
10 68980
11 231773
12 1063877
13 3723774
14 17259336
15 62309667
16 290989867
17 1076811320
18 5058555808
19 19101348364
20 90168012117
21 346225925596
22 1641065271522
23 6390839122105
24 30397384197953
25 119817767728918
26 571601039341048
27 2276881667206275
28 10890176289287515