A278395 - cp's OEIS frontend

A278395 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 {-3,-2,-1,1,2,3}.

n	a(n)
0	1
1	3
2	12
3	60
4	311
5	1674
6	9173
7	51002
8	286384
9	1620776
10	9228724
11	52810792
12	303447096
13	1749612736
14	10117583749
15	58656027314
16	340806249367
17	1984018271850
18	11569932938192
19	67574451148408
20	395214184047366
21	2314315680481252
22	13567587349336459
23	79621279809031310

[1, 3, 12, 60, 311, 1674, 9173, 51002, 286384, 1620776, 9228724, 52810792, 303447096, 1749612736, 10117583749, 58656027314, 340806249367, 1984018271850, 11569932938192, 67574451148408, 395214184047366, 2314315680481252, 13567587349336459, 79621279809031310]

cp's OEIS Frontend

A278395 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 {-3,-2,-1,1,2,3}.

Table of values

List of values