A328270 - cp's OEIS frontend

A328270 Total number of nodes in all walks on cubic lattice starting at (0,0,0), ending at (0,n,n), remaining in the first (nonnegative) octant 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	9
2	130
3	2401
4	50346
5	1141030
6	27222364
7	673340265
8	17104148290
9	443406172278
10	11680186909062
11	311667574680190
12	8404755004516300
13	228659546010880620
14	6267500870514732780
15	172891678107177498193
16	4795723803862121368590
17	133668769806498536349670

[1, 9, 130, 2401, 50346, 1141030, 27222364, 673340265, 17104148290, 443406172278, 11680186909062, 311667574680190, 8404755004516300, 228659546010880620, 6267500870514732780, 172891678107177498193, 4795723803862121368590, 133668769806498536349670]

cp's OEIS Frontend

A328270 Total number of nodes in all walks on cubic lattice starting at (0,0,0), ending at (0,n,n), remaining in the first (nonnegative) octant 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