# A252745 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 3
4 6
5 15
6 26
7 57
8 118
9 237
10 486
11 989
12 1992
13 3997
14 8038
15 16133
16 32331
17 64777
18 129810
19 260191
20 521325
21 1043924
22 2089305
23 4180716