# A149897 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 14
4 46
5 162
6 595
7 2261
8 8841
9 35340
10 143811
11 594390
12 2488519
13 10533645
14 45014997
15 193970548
16 841930778
17 3678034790
18 16160393595
19 71371290127
20 316672410576
21 1410982150790
22 6310902015761
23 28325384296781
24 127540370321842
25 575963773128130
26 2608068991503519
27 11839437921469267