# A096267 (b-file synthesized from sequence entry)
1 2
2 6
3 22
4 88
5 372
6 1628
7 7312
8 33466
9 155446
10 730534
11 3466170
12 16576874
13 79810756
14 386458826
15 1880580352
16 9190830700
17 45088727820
18 221945045488
19 1095798917674
20 5424898610958
21 26922433371778
22 133906343014110
23 667370905196930
24 3332257266746004