A368515 - cp's OEIS frontend

A368515 Irregular triangular array T, read by rows: T(n,k) = number of sums |x-y|+|y-z| = k, where x,y,z are in {1,2,...,n} and x != y.

n	a(n)
1	2
2	2
3	4
4	8
5	4
6	2
7	6
8	14
9	14
10	8
11	4
12	2
13	8
14	20
15	24
16	22
17	12
18	8
19	4
20	2
21	10
22	26
23	34
24	36
25	30
26	18
27	12
28	8
29	4
30	2
31	12
32	32
33	44
34	50
35	48
36	40
37	24
38	18
39	12
40	8
41	4
42	2
43	14
44	38
45	54
46	64
47	66
48	62
49	50
50	32
51	24
52	18
53	12
54	8
55	4
56	2
57	16
58	44
59	64
60	78
61	84
62	84
63	76
64	62
65	40
66	32
67	24
68	18
69	12
70	8
71	4

[2, 2, 4, 8, 4, 2, 6, 14, 14, 8, 4, 2, 8, 20, 24, 22, 12, 8, 4, 2, 10, 26, 34, 36, 30, 18, 12, 8, 4, 2, 12, 32, 44, 50, 48, 40, 24, 18, 12, 8, 4, 2, 14, 38, 54, 64, 66, 62, 50, 32, 24, 18, 12, 8, 4, 2, 16, 44, 64, 78, 84, 84, 76, 62, 40, 32, 24, 18, 12, 8, 4]

cp's OEIS Frontend

A368515 Irregular triangular array T, read by rows: T(n,k) = number of sums |x-y|+|y-z| = k, where x,y,z are in {1,2,...,n} and x != y.

Table of values

List of values

n	a(n)
1	2
2	2
3	4
4	8
5	4
6	2
7	6
8	14
9	14
10	8
11	4
12	2
13	8
14	20
15	24
16	22
17	12
18	8
19	4
20	2
21	10
22	26
23	34
24	36
25	30
26	18
27	12
28	8
29	4
30	2
31	12
32	32
33	44
34	50
35	48
36	40
37	24
38	18
39	12
40	8
41	4
42	2
43	14
44	38
45	54
46	64
47	66
48	62
49	50
50	32
51	24
52	18
53	12
54	8
55	4
56	2
57	16
58	44
59	64
60	78
61	84
62	84
63	76
64	62
65	40
66	32
67	24
68	18
69	12
70	8
71	4

n	a(n)
1	2
2	2
3	4
4	8
5	4
6	2
7	6
8	14
9	14
10	8
11	4
12	2
13	8
14	20
15	24
16	22
17	12
18	8
19	4
20	2
21	10
22	26
23	34
24	36
25	30
26	18
27	12
28	8
29	4
30	2
31	12
32	32
33	44
34	50
35	48
36	40
37	24
38	18
39	12
40	8
41	4
42	2
43	14
44	38
45	54
46	64
47	66
48	62
49	50
50	32
51	24
52	18
53	12
54	8
55	4
56	2
57	16
58	44
59	64
60	78
61	84
62	84
63	76
64	62
65	40
66	32
67	24
68	18
69	12
70	8
71	4

n	a(n)
1	2
2	2
3	4
4	8
5	4
6	2
7	6
8	14
9	14
10	8
11	4
12	2
13	8
14	20
15	24
16	22
17	12
18	8
19	4
20	2
21	10
22	26
23	34
24	36
25	30
26	18
27	12
28	8
29	4
30	2
31	12
32	32
33	44
34	50
35	48
36	40
37	24
38	18
39	12
40	8
41	4
42	2
43	14
44	38
45	54
46	64
47	66
48	62
49	50
50	32
51	24
52	18
53	12
54	8
55	4
56	2
57	16
58	44
59	64
60	78
61	84
62	84
63	76
64	62
65	40
66	32
67	24
68	18
69	12
70	8
71	4