# A149149 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 9
4 38
5 111
6 489
7 1611
8 7292
9 25865
10 119229
11 444481
12 2075488
13 8019353
14 37805228
15 150069461
16 712667390
17 2889197265
18 13800198063
19 56900245013
20 273057703416
21 1141558272143
22 5499371173998
23 23258138316869
24 112406688710300
25 480068721208329
26 2326541496532377
27 10019955108804655
28 48673791102092756