A182401 - cp's OEIS frontend

A182401 Number of paths from (0,0) to (n,0), never going below the x-axis, using steps U=(1,1), H=(1,0) and D=(1,-1), where the H steps come in five colors.

n	a(n)
0	1
1	5
2	26
3	140
4	777
5	4425
6	25755
7	152675
8	919139
9	5606255
10	34578292
11	215322310
12	1351978807
13	8550394455
14	54419811354
15	348309105300
16	2240486766555
17	14476490777175
18	93914850905862
19	611489638708140
20	3994697746533171
21	26175407271617955
22	171991872078871311

[1, 5, 26, 140, 777, 4425, 25755, 152675, 919139, 5606255, 34578292, 215322310, 1351978807, 8550394455, 54419811354, 348309105300, 2240486766555, 14476490777175, 93914850905862, 611489638708140, 3994697746533171, 26175407271617955, 171991872078871311]

cp's OEIS Frontend

A182401 Number of paths from (0,0) to (n,0), never going below the x-axis, using steps U=(1,1), H=(1,0) and D=(1,-1), where the H steps come in five colors.

Table of values

List of values