# A149098 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 8
4 33
5 90
6 350
7 1153
8 4325
9 15768
10 59067
11 225556
12 860360
13 3350183
14 13056849
15 51412176
16 203769224
17 810519761
18 3249045763
19 13052116198
20 52740175340
21 213719432688
22 869252192422
23 3547301634213
24 14512725719457
25 59557483073237
26 244947229331509
27 1009927590891245
28 4172695040825146