A278396 - cp's OEIS frontend

A278396 Number of positive meanders (walks starting at the origin and ending at any altitude > 0 that never touch or go below the x-axis in between) with n steps from {-4,-3,-2,-1,1,2,3,4}.

n	a(n)
0	1
1	4
2	22
3	146
4	1013
5	7269
6	53156
7	394154
8	2951950
9	22279439
10	169175927
11	1290970376
12	9891573310
13	76050920691
14	586426828071
15	4533349152056
16	35122039919110
17	272634162463779
18	2119948044144136
19	16509519223752380
20	128747868290672353
21	1005273235488567875

[1, 4, 22, 146, 1013, 7269, 53156, 394154, 2951950, 22279439, 169175927, 1290970376, 9891573310, 76050920691, 586426828071, 4533349152056, 35122039919110, 272634162463779, 2119948044144136, 16509519223752380, 128747868290672353, 1005273235488567875]

cp's OEIS Frontend

A278396 Number of positive meanders (walks starting at the origin and ending at any altitude > 0 that never touch or go below the x-axis in between) with n steps from {-4,-3,-2,-1,1,2,3,4}.

Table of values

List of values