# A049125 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 4
5 10
6 25
7 68
8 187
9 534
10 1544
11 4554
12 13576
13 40968
14 124681
15 382636
16 1182116
17 3674674
18 11483243
19 36057516
20 113701968
21 359927638
22 1143327888
23 3643379152
24 11643793399
25 37311200060
26 119852247220
27 385864664018
28 1244896820476