A316730 - cp's OEIS frontend

A316730 Number of permutations of {0,1,...,2n+2} with first element n whose sequence of ascents and descents forms a Dyck path.

n	a(n)
0	1
1	7
2	121
3	4411
4	283073
5	28318137
6	4076415425
7	798519164779
8	204292676593353
9	66150225395814649
10	26444888796754193841
11	12792566645739144488693
12	7364969554345555373419625
13	4976538708651698959601499559
14	3900052284443403730374391636689

[1, 7, 121, 4411, 283073, 28318137, 4076415425, 798519164779, 204292676593353, 66150225395814649, 26444888796754193841, 12792566645739144488693, 7364969554345555373419625, 4976538708651698959601499559, 3900052284443403730374391636689]

cp's OEIS Frontend

A316730 Number of permutations of {0,1,...,2n+2} with first element n whose sequence of ascents and descents forms a Dyck path.

Table of values

List of values