# A056384 (b-file synthesized from sequence entry)
1 5
2 20
3 70
4 350
5 820
6 8030
7 13170
8 102750
9 327050
10 2444780
11 4884430
12 61632150
13 101732420
14 1017309930
15 3816214730
16 19104506250
17 47683838320
18 635787430450
19 1059638680670
20 11924777944650
21 39736963208630