# A027139 (b-file synthesized from sequence entry)
0 2
1 7
2 23
3 72
4 218
5 648
6 1907
7 5581
8 16290
9 47502
10 138521
11 404183
12 1180402
13 3450899
14 10099605
15 29589780
16 86781374
17 254761882
18 748580729
19 2201465799
20 6479301022
21 19083705249
22 56246157177
23 165881453558
24 489506759446