# A005406 (b-file synthesized from sequence entry)
1 1
2 3
3 6
4 13
5 25
6 49
7 91
8 170
9 309
10 558
11 992
12 1752
13 3062
14 5317
15 9166
16 15712
17 26784
18 45447
19 76775
20 129203
21 216662
22 362177
23 603671
24 1003566
25 1664389
26 2754382
27 4549207
28 7500096
29 12344840
30 20288723
31 33298979
32 54584077
33 89373081
34 146182754