# A149038 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 10
4 35
5 135
6 541
7 2217
8 9377
9 40349
10 175942
11 778143
12 3477104
13 15671149
14 71188693
15 325532865
16 1497282449
17 6922353003
18 32148253707
19 149919105537
20 701702507444
21 3295012665703
22 15519855244683
23 73301505108780
24 347061046971505
25 1647058682479621
26 7833160088904523
27 37325460274234458