A150500 - cp's OEIS frontend

A150500 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), (0, 1, 0), (1, 1, -1), (1, 1, 1)}.

n	a(n)
0	1
1	2
2	7
3	25
4	101
5	416
6	1787
7	7792
8	34645
9	155722
10	707795
11	3242515
12	14963665
13	69458000
14	324102287
15	1519028843
16	7147771981
17	33750528146
18	159860887355
19	759295147045
20	3615520821281
21	17255165910632
22	82521746019487
23	395404081034830
24	1897886817388201
25	9124229781131546
26	43930513066698367
27	211803668881914847

[1, 2, 7, 25, 101, 416, 1787, 7792, 34645, 155722, 707795, 3242515, 14963665, 69458000, 324102287, 1519028843, 7147771981, 33750528146, 159860887355, 759295147045, 3615520821281, 17255165910632, 82521746019487, 395404081034830, 1897886817388201, 9124229781131546, 43930513066698367, 211803668881914847]

cp's OEIS Frontend

A150500 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), (0, 1, 0), (1, 1, -1), (1, 1, 1)}.

Table of values

List of values