A368606 - cp's OEIS frontend

A368606 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 and y >= z.

n	a(n)
1	1
2	2
3	2
4	1
5	3
6	4
7	4
8	2
9	1
10	4
11	6
12	7
13	6
14	4
15	2
16	1
17	5
18	8
19	10
20	10
21	9
22	6
23	4
24	2
25	1
26	6
27	10
28	13
29	14
30	14
31	12
32	9
33	6
34	4
35	2
36	1
37	7
38	12
39	16
40	18
41	19
42	18
43	16
44	12
45	9
46	6
47	4
48	2
49	1
50	8
51	14
52	19
53	22
54	24
55	24
56	23
57	20
58	16
59	12
60	9
61	6
62	4
63	2
64	1
65	9
66	16
67	22
68	26
69	29
70	30
71	30
72	28
73	25
74	20
75	16

[1, 2, 2, 1, 3, 4, 4, 2, 1, 4, 6, 7, 6, 4, 2, 1, 5, 8, 10, 10, 9, 6, 4, 2, 1, 6, 10, 13, 14, 14, 12, 9, 6, 4, 2, 1, 7, 12, 16, 18, 19, 18, 16, 12, 9, 6, 4, 2, 1, 8, 14, 19, 22, 24, 24, 23, 20, 16, 12, 9, 6, 4, 2, 1, 9, 16, 22, 26, 29, 30, 30, 28, 25, 20, 16]

cp's OEIS Frontend

A368606 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 and y >= z.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	1
5	3
6	4
7	4
8	2
9	1
10	4
11	6
12	7
13	6
14	4
15	2
16	1
17	5
18	8
19	10
20	10
21	9
22	6
23	4
24	2
25	1
26	6
27	10
28	13
29	14
30	14
31	12
32	9
33	6
34	4
35	2
36	1
37	7
38	12
39	16
40	18
41	19
42	18
43	16
44	12
45	9
46	6
47	4
48	2
49	1
50	8
51	14
52	19
53	22
54	24
55	24
56	23
57	20
58	16
59	12
60	9
61	6
62	4
63	2
64	1
65	9
66	16
67	22
68	26
69	29
70	30
71	30
72	28
73	25
74	20
75	16

n	a(n)
1	1
2	2
3	2
4	1
5	3
6	4
7	4
8	2
9	1
10	4
11	6
12	7
13	6
14	4
15	2
16	1
17	5
18	8
19	10
20	10
21	9
22	6
23	4
24	2
25	1
26	6
27	10
28	13
29	14
30	14
31	12
32	9
33	6
34	4
35	2
36	1
37	7
38	12
39	16
40	18
41	19
42	18
43	16
44	12
45	9
46	6
47	4
48	2
49	1
50	8
51	14
52	19
53	22
54	24
55	24
56	23
57	20
58	16
59	12
60	9
61	6
62	4
63	2
64	1
65	9
66	16
67	22
68	26
69	29
70	30
71	30
72	28
73	25
74	20
75	16

n	a(n)
1	1
2	2
3	2
4	1
5	3
6	4
7	4
8	2
9	1
10	4
11	6
12	7
13	6
14	4
15	2
16	1
17	5
18	8
19	10
20	10
21	9
22	6
23	4
24	2
25	1
26	6
27	10
28	13
29	14
30	14
31	12
32	9
33	6
34	4
35	2
36	1
37	7
38	12
39	16
40	18
41	19
42	18
43	16
44	12
45	9
46	6
47	4
48	2
49	1
50	8
51	14
52	19
53	22
54	24
55	24
56	23
57	20
58	16
59	12
60	9
61	6
62	4
63	2
64	1
65	9
66	16
67	22
68	26
69	29
70	30
71	30
72	28
73	25
74	20
75	16