# A224073 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 3
5 4
6 10
7 16
8 43
9 101
10 340
11 911
12 2544
13 7224
14 22616
15 65376
16 187754
17 545743
18 1653966
19 4832057
20 14027794