# A051291 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 7
4 17
5 40
6 97
7 238
8 587
9 1458
10 3640
11 9124
12 22951
13 57904
14 146461
15 371281
16 943045
17 2399460
18 6114555
19 15603339
20 39866932
21 101976512
22 261117378
23 669239402
24 1716737267
25 4407306170
26 11323050897
27 29110603423
28 74888578067