A368519 - cp's OEIS frontend

A368519 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 < z.

n	a(n)
1	2
2	4
3	3
4	2
5	6
6	6
7	8
8	2
9	2
10	8
11	9
12	14
13	9
14	6
15	2
16	2
17	10
18	12
19	20
20	16
21	16
22	6
23	6
24	2
25	2
26	12
27	15
28	26
29	23
30	26
31	17
32	12
33	6
34	6
35	2
36	2
37	14
38	18
39	32
40	30
41	36
42	28
43	26
44	12
45	12
46	6
47	6
48	2
49	2
50	16
51	21
52	38
53	37
54	46
55	39
56	40
57	27
58	20
59	12
60	12
61	6
62	6
63	2
64	2
65	18
66	24
67	44
68	44
69	56
70	50
71	54
72	42

[2, 4, 3, 2, 6, 6, 8, 2, 2, 8, 9, 14, 9, 6, 2, 2, 10, 12, 20, 16, 16, 6, 6, 2, 2, 12, 15, 26, 23, 26, 17, 12, 6, 6, 2, 2, 14, 18, 32, 30, 36, 28, 26, 12, 12, 6, 6, 2, 2, 16, 21, 38, 37, 46, 39, 40, 27, 20, 12, 12, 6, 6, 2, 2, 18, 24, 44, 44, 56, 50, 54, 42]

cp's OEIS Frontend

A368519 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 < z.

Table of values

List of values

n	a(n)
1	2
2	4
3	3
4	2
5	6
6	6
7	8
8	2
9	2
10	8
11	9
12	14
13	9
14	6
15	2
16	2
17	10
18	12
19	20
20	16
21	16
22	6
23	6
24	2
25	2
26	12
27	15
28	26
29	23
30	26
31	17
32	12
33	6
34	6
35	2
36	2
37	14
38	18
39	32
40	30
41	36
42	28
43	26
44	12
45	12
46	6
47	6
48	2
49	2
50	16
51	21
52	38
53	37
54	46
55	39
56	40
57	27
58	20
59	12
60	12
61	6
62	6
63	2
64	2
65	18
66	24
67	44
68	44
69	56
70	50
71	54
72	42

n	a(n)
1	2
2	4
3	3
4	2
5	6
6	6
7	8
8	2
9	2
10	8
11	9
12	14
13	9
14	6
15	2
16	2
17	10
18	12
19	20
20	16
21	16
22	6
23	6
24	2
25	2
26	12
27	15
28	26
29	23
30	26
31	17
32	12
33	6
34	6
35	2
36	2
37	14
38	18
39	32
40	30
41	36
42	28
43	26
44	12
45	12
46	6
47	6
48	2
49	2
50	16
51	21
52	38
53	37
54	46
55	39
56	40
57	27
58	20
59	12
60	12
61	6
62	6
63	2
64	2
65	18
66	24
67	44
68	44
69	56
70	50
71	54
72	42

n	a(n)
1	2
2	4
3	3
4	2
5	6
6	6
7	8
8	2
9	2
10	8
11	9
12	14
13	9
14	6
15	2
16	2
17	10
18	12
19	20
20	16
21	16
22	6
23	6
24	2
25	2
26	12
27	15
28	26
29	23
30	26
31	17
32	12
33	6
34	6
35	2
36	2
37	14
38	18
39	32
40	30
41	36
42	28
43	26
44	12
45	12
46	6
47	6
48	2
49	2
50	16
51	21
52	38
53	37
54	46
55	39
56	40
57	27
58	20
59	12
60	12
61	6
62	6
63	2
64	2
65	18
66	24
67	44
68	44
69	56
70	50
71	54
72	42