A278392 - cp's OEIS frontend

A278392 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,-1,0,1,2,3}.

n	a(n)
0	1
1	3
2	15
3	87
4	530
5	3329
6	21316
7	138345
8	906853
9	5989967
10	39804817
11	265812731
12	1782288408
13	11991201709
14	80911836411
15	547334588037
16	3710610424765
17	25204313298581
18	171492983631249
19	1168638213247713
20	7974592724571446
21	54484621312318007
22	372671912259214487

[1, 3, 15, 87, 530, 3329, 21316, 138345, 906853, 5989967, 39804817, 265812731, 1782288408, 11991201709, 80911836411, 547334588037, 3710610424765, 25204313298581, 171492983631249, 1168638213247713, 7974592724571446, 54484621312318007, 372671912259214487]

cp's OEIS Frontend

A278392 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,-1,0,1,2,3}.

Table of values

List of values