# A048634 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 0
4 1
5 1
6 1
7 2
8 3
9 5
10 13
11 44
12 233
13 3073
14 135445
15 31561758
16 96989417779
17 13136731722638413
18 414618347540933702027833
19 40213592128486236142855326045681320
20 528275171395527518169753769210241662354568290572993