A278416 - cp's OEIS frontend

A278416 Number of meanders (walks starting at the origin and ending at any altitude >= 0 that may touch but never go below the x-axis) with n steps from {-4,-3,-2,-1,1,2,3,4}.

n	a(n)
0	1
1	4
2	26
3	174
4	1231
5	8899
6	65492
7	487646
8	3664123
9	27723979
10	210946444
11	1612394958
12	12371547879
13	95230159650
14	735060394986
15	5687343753535
16	44096482961189
17	342530654187820
18	2665058975987628
19	20765913987073659
20	162019898098364055
21	1265622208055843635

[1, 4, 26, 174, 1231, 8899, 65492, 487646, 3664123, 27723979, 210946444, 1612394958, 12371547879, 95230159650, 735060394986, 5687343753535, 44096482961189, 342530654187820, 2665058975987628, 20765913987073659, 162019898098364055, 1265622208055843635]

cp's OEIS Frontend

A278416 Number of meanders (walks starting at the origin and ending at any altitude >= 0 that may touch but never go below the x-axis) with n steps from {-4,-3,-2,-1,1,2,3,4}.

Table of values

List of values