# A011828 (b-file synthesized from sequence entry)
1 2
2 3
3 5
4 10
5 26
6 95
7 457
8 2246
9 9705
10 35926
11 115688
12 331201
13 859587
14 2054860
15 4582126
16 9627831
17 19217260
18 36679253
19 67308375
20 119286676
21 204940824
22 342425909
23 557944719
24 888630900
25 1386246251
26 2121866592
27 3191757298