# A225178 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 16
5 48
6 140
7 408
8 1224
9 3640
10 10824
11 32192
12 96576
13 288912
14 864288
15 2585584
16 7735104
17 23205312
18 69551552
19 208461504
20 624806688
21 1872691488
22 5612903296
23 16838709888
24 50500659456
25 151455567744
26 454227600128
27 1362265877376