# A194950 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 20
5 72
6 260
7 996
8 3772
9 14852
10 58204
11 234236
12 934180
13 3825428
14 15493292
15 64009212
16 263052756
17 1096235844
18 4537607788
19 19075092364
20 79566093524
21 336047432420
22 1412387294716
23 5993817852300
24 25302001904628
25 107911381154004
26 457634804571804