A211620 - cp's OEIS frontend

A211620 Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and -1<=2w+x+y<=1.

n	a(n)
0	0
1	2
2	16
3	38
4	76
5	122
6	184
7	254
8	340
9	434
10	544
11	662
12	796
13	938
14	1096
15	1262
16	1444
17	1634
18	1840
19	2054
20	2284
21	2522
22	2776
23	3038
24	3316
25	3602
26	3904
27	4214
28	4540
29	4874
30	5224
31	5582
32	5956
33	6338
34	6736
35	7142
36	7564
37	7994
38	8440
39	8894
40	9364
41	9842
42	10336
43	10838
44	11356
45	11882

[0, 2, 16, 38, 76, 122, 184, 254, 340, 434, 544, 662, 796, 938, 1096, 1262, 1444, 1634, 1840, 2054, 2284, 2522, 2776, 3038, 3316, 3602, 3904, 4214, 4540, 4874, 5224, 5582, 5956, 6338, 6736, 7142, 7564, 7994, 8440, 8894, 9364, 9842, 10336, 10838, 11356, 11882]

cp's OEIS Frontend

A211620 Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and -1<=2w+x+y<=1.

Table of values

List of values