# A299967 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 3
4 13
5 32
6 121
7 376
8 1406
9 5030
10 19632
11 76334
12 314582
13 1308550
14 5667494
15 24940458
16 113239394
17 523149560
18 2480434938
19 11968944532
20 59051754824