# A019258 (b-file synthesized from sequence entry)
3 1
4 1
5 1
6 1
7 2
8 12
9 30
10 88
11 204
12 392
13 893
14 2185
15 5461
16 14441
17 37158
18 93312
19 236157
20 601599
21 1538005
22 3963519
23 10245493
24 26465121
25 68448150
26 177543974
27 461856724
28 1204741952
29 3150133226
30 8253342526
31 21660871257