A151162 - cp's OEIS frontend

A151162 Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.

n	a(n)
0	1
1	3
2	12
3	45
4	180
5	702
6	2808
7	11097
8	44388
9	176418
10	705672
11	2812482
12	11249928
13	44903484
14	179613936
15	717517521
16	2870070084
17	11470898106
18	45883592424
19	183438670950
20	733754683800
21	2934026948196
22	11736107792784
23	46934017407594
24	187736069630376
25	750833732416212
26	3003334929664848

[1, 3, 12, 45, 180, 702, 2808, 11097, 44388, 176418, 705672, 2812482, 11249928, 44903484, 179613936, 717517521, 2870070084, 11470898106, 45883592424, 183438670950, 733754683800, 2934026948196, 11736107792784, 46934017407594, 187736069630376, 750833732416212, 3003334929664848]

cp's OEIS Frontend

A151162 Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.

Table of values

List of values