Catalan Numbers II
Catalan Numbers II
1
1
1
1
1
1
1
1
1
1
1
2
3
4
5
6
7
8
9
10
2
5
9
14
20
27
35
44
54
5
14
28
48
75
110
154
208
14
42
90
165
275
429
637
42
132
297
572
1001
1638
132
429
1001
2002
3640
429
1430
3432
7072
1430
4862
11934
4862
16796
16796
Reference: M. Gardner, Time Travel and Other Mathematical Bewilderments, pp. 253-266.