# A334816 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 5
4 9
5 17
6 43
7 137
8 281
9 673
10 2401
11 4801
12 9601
13 170761
14 341521
15 683041
16 5114881
17 31846081
18 131955841
19 1985902081
20 7545868801