# A149464 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 52
5 209
6 898
7 3898
8 17383
9 78335
10 358867
11 1654507
12 7705474
13 36071044
14 170031345
15 804606129
16 3825822908
17 18249491754
18 87362378973
19 419284812428
20 2017756629055
21 9730792790577
22 47027997052118
23 227679959115481
24 1104183474096156
25 5362865745453707
26 26083735725385808
27 127023206715913660