# A076906 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 5
4 12
5 31
6 82
7 218
8 612
9 1673
10 4892
11 13672
12 41192
13 117194
14 361302
15 1042970
16 3274712
17 9567393
18 30490688
19 89984282
20 290353456