A147999 - cp's OEIS frontend

A147999 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, -1, -1), (-1, -1, 1), (-1, 1, 0), (1, 0, 0)}.

n	a(n)
0	1
1	1
2	2
3	3
4	8
5	15
6	39
7	77
8	244
9	543
10	1655
11	3729
12	12385
13	29510
14	93170
15	221283
16	764948
17	1908675
18	6323115
19	15688889
20	55069789
21	141067986
22	473165330
23	1200395415
24	4290381497
25	11232104990
26	38585190644
27	100082744787
28	360316046969
29	956558534943
30	3305432502421
31	8679121868177
32	31575545872868
33	84905308145331

[1, 1, 2, 3, 8, 15, 39, 77, 244, 543, 1655, 3729, 12385, 29510, 93170, 221283, 764948, 1908675, 6323115, 15688889, 55069789, 141067986, 473165330, 1200395415, 4290381497, 11232104990, 38585190644, 100082744787, 360316046969, 956558534943, 3305432502421, 8679121868177, 31575545872868, 84905308145331]

cp's OEIS Frontend

A147999 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, -1, -1), (-1, -1, 1), (-1, 1, 0), (1, 0, 0)}.

Table of values

List of values