A340540 - cp's OEIS frontend

A340540 Number of walks of length 4n in the first octant using steps (1,1,1), (-1,0,0), (0,-1,0), and (0,0,-1) that start and end at the origin.

n	a(n)
0	1
1	6
2	288
3	24444
4	2738592
5	361998432
6	53414223552
7	8525232846072
8	1443209364298944
9	255769050813120576
10	47020653859202576640
11	8907614785269428079168
12	1730208409741026141405696
13	343266632435192859791576064
14	69350551439109880798294334208

[1, 6, 288, 24444, 2738592, 361998432, 53414223552, 8525232846072, 1443209364298944, 255769050813120576, 47020653859202576640, 8907614785269428079168, 1730208409741026141405696, 343266632435192859791576064, 69350551439109880798294334208]

cp's OEIS Frontend

A340540 Number of walks of length 4n in the first octant using steps (1,1,1), (-1,0,0), (0,-1,0), and (0,0,-1) that start and end at the origin.

Table of values

List of values