# A026990 (b-file synthesized from sequence entry)
0 1
1 3
2 10
3 30
4 78
5 189
6 480
7 1242
8 3030
9 7084
10 17112
11 42146
12 99792
13 229065
14 540544
15 1298851
16 3025386
17 6871084
18 15993500
19 37857267
20 87275980
21 196867143
22 454118616
23 1064055225
24 2435780334
25 5468505723
26 12533827796
27 29153115186