A211615 - cp's OEIS frontend

A211615 Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and -1<=w+x+y<=1.

n	a(n)
0	0
1	6
2	24
3	60
4	114
5	186
6	276
7	384
8	510
9	654
10	816
11	996
12	1194
13	1410
14	1644
15	1896
16	2166
17	2454
18	2760
19	3084
20	3426
21	3786
22	4164
23	4560
24	4974
25	5406
26	5856
27	6324
28	6810
29	7314
30	7836
31	8376
32	8934
33	9510
34	10104
35	10716
36	11346
37	11994
38	12660
39	13344
40	14046

[0, 6, 24, 60, 114, 186, 276, 384, 510, 654, 816, 996, 1194, 1410, 1644, 1896, 2166, 2454, 2760, 3084, 3426, 3786, 4164, 4560, 4974, 5406, 5856, 6324, 6810, 7314, 7836, 8376, 8934, 9510, 10104, 10716, 11346, 11994, 12660, 13344, 14046]

cp's OEIS Frontend

A211615 Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and -1<=w+x+y<=1.

Table of values

List of values