# A149902 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 14
4 47
5 159
6 579
7 2119
8 8299
9 32155
10 129903
11 521605
12 2168721
13 8937214
14 37854276
15 159143916
16 684442662
17 2922266602
18 12717021946
19 54977669121
20 241582801230
21 1055137305760
22 4673859417364
23 20588950910056
24 91821057325252
25 407425574625565
26 1827561724401272
27 8159821495926284