# A049144 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 4
5 10
6 24
7 64
8 167
9 460
10 1256
11 3532
12 9910
13 28280
14 80756
15 232984
16 673371
17 1958982
18 5710900
19 16722156
20 49061276
21 144387320
22 425674212
23 1257774336
24 3721938064
25 11032243612
26 32740524236
27 97287632048
28 289369653892