# A149466 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 53
5 204
6 874
7 3723
8 16387
9 72446
10 326215
11 1477841
12 6760897
13 31103660
14 144014155
15 669926435
16 3130656530
17 14684820342
18 69123314399
19 326358901691
20 1545191603268
21 7334139382820
22 34890634801128
23 166330881788243
24 794451991099846
25 3801247637866928
26 18217657255955808
27 87440714019506163