# A018114 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 10
4 24
5 53
6 117
7 260
8 576
9 1274
10 2821
11 6245
12 13824
13 30597
14 67723
15 149896
16 331776
17 734341
18 1625363
19 3597521
20 7962624
21 17624184
22 39008731
23 86340516
24 191102976
25 422980416
26 936209559
27 2072172384