A328426 - cp's OEIS frontend

A328426 Number of 2n-step walks on cubic lattice starting at (0,0,0), ending at (0,n,n) and using steps (0,0,1), (0,1,0), (1,0,0), (-1,1,1), (1,-1,1), and (1,1,-1).

n	a(n)
0	1
1	4
2	72
3	1480
4	33880
5	819504
6	20562696
7	529399728
8	13892650200
9	369988864960
10	9969694635472
11	271217782469088
12	7436910593958664
13	205289086309888000
14	5699233814774374800
15	159004177074207384480
16	4455230052707022818520
17	125307788218001246547360

[1, 4, 72, 1480, 33880, 819504, 20562696, 529399728, 13892650200, 369988864960, 9969694635472, 271217782469088, 7436910593958664, 205289086309888000, 5699233814774374800, 159004177074207384480, 4455230052707022818520, 125307788218001246547360]

cp's OEIS Frontend

A328426 Number of 2n-step walks on cubic lattice starting at (0,0,0), ending at (0,n,n) and using steps (0,0,1), (0,1,0), (1,0,0), (-1,1,1), (1,-1,1), and (1,1,-1).

Table of values

List of values