A211538 - cp's OEIS frontend

A211538 Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w=2n-2x-y.

n	a(n)
1	0
2	0
3	0
4	1
5	3
6	5
7	9
8	12
9	18
10	22
11	30
12	35
13	45
14	51
15	63
16	70
17	84
18	92
19	108
20	117
21	135
22	145
23	165
24	176
25	198
26	210
27	234
28	247
29	273
30	287
31	315
32	330
33	360
34	376
35	408
36	425
37	459
38	477
39	513
40	532
41	570
42	590
43	630
44	651
45	693
46	715
47	759
48	782
49	828
50	852
51	900
52	925
53	975
54	1001
55	1053
56	1080
57	1134
58	1162

[0, 0, 0, 1, 3, 5, 9, 12, 18, 22, 30, 35, 45, 51, 63, 70, 84, 92, 108, 117, 135, 145, 165, 176, 198, 210, 234, 247, 273, 287, 315, 330, 360, 376, 408, 425, 459, 477, 513, 532, 570, 590, 630, 651, 693, 715, 759, 782, 828, 852, 900, 925, 975, 1001, 1053, 1080, 1134, 1162]

cp's OEIS Frontend

A211538 Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w=2n-2x-y.

Table of values

List of values