# A083694 (b-file synthesized from sequence entry)
0 0
1 2
2 4
3 18
4 56
5 202
6 684
7 2378
8 8176
9 28242
10 97364
11 335938
12 1158696
13 3997082
14 13787644
15 47560698
16 164059616
17 565922722
18 1952143524
19 6733900658
20 23228518936
21 80126541162
22 276395677004
23 953424059818
24 3288826504656