# A018008 (b-file synthesized from sequence entry)
0 1
1 3
2 5
3 11
4 25
5 55
6 121
7 270
8 599
9 1331
10 2961
11 6584
12 14641
13 32562
14 72416
15 161051
16 358175
17 796573
18 1771561
19 3939917
20 8762296
21 19487171
22 43339081
23 96385252
24 214358881
25 476729884
26 1060237770
27 2357947691
28 5244028720
29 11662615467
30 25937424601