# A005960 (b-file synthesized from sequence entry)
1 1
2 3
3 8
4 23
5 69
6 208
7 636
8 1963
9 6099
10 19059
11 59836
12 188576
13 596252
14 1890548
15 6008908
16 19139155
17 61074583
18 195217253
19 624913284
20 2003090071
21 6428430129
22 20653101216
23 66420162952
24 213802390264
25 688796847976
26 2220789746752
27 7165331870036