A212678 - cp's OEIS frontend

A212678 Number of (w,x,y,z) with all terms in {1,...,n} and w+x+y=|x-y|+|y-z|.

n	a(n)
0	0
1	0
2	0
3	0
4	5
5	14
6	28
7	53
8	87
9	130
10	191
11	265
12	353
13	465
14	595
15	743
16	922
17	1123
18	1347
19	1608
20	1896
21	2211
22	2570
23	2960
24	3382
25	3854
26	4362
27	4906
28	5507
29	6148
30	6830
31	7575
32	8365
33	9200
34	10105
35	11059
36	12063
37	13143
38	14277
39	15465
40	16736
41	18065
42	19453
43	20930

[0, 0, 0, 0, 5, 14, 28, 53, 87, 130, 191, 265, 353, 465, 595, 743, 922, 1123, 1347, 1608, 1896, 2211, 2570, 2960, 3382, 3854, 4362, 4906, 5507, 6148, 6830, 7575, 8365, 9200, 10105, 11059, 12063, 13143, 14277, 15465, 16736, 18065, 19453, 20930]

cp's OEIS Frontend

A212678 Number of (w,x,y,z) with all terms in {1,...,n} and w+x+y=|x-y|+|y-z|.

Table of values

List of values