# A049145 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 4
5 10
6 26
7 72
8 205
9 600
10 1790
11 5428
12 16676
13 51800
14 162408
15 513288
16 1633543
17 5230506
18 16838080
19 54465356
20 176933606
21 577002976
22 1888274740
23 6199187904
24 20411160754
25 67384417204
26 223006818992
27 739711312416
28 2458778309456