A386823 - cp's OEIS frontend

A386823 Triangle read by rows: T(n,k) = numerator((n^2 - k^2)/(n^2 + k^2)), where 0 <= k < n.

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	5
7	1
8	15
9	3
10	7
11	1
12	12
13	21
14	8
15	9
16	1
17	35
18	4
19	3
20	5
21	11
22	1
23	24
24	45
25	20
26	33
27	12
28	13
29	1
30	63
31	15
32	55
33	3
34	39
35	7
36	15
37	1
38	40
39	77
40	4
41	65
42	28
43	5
44	16
45	17
46	1
47	99
48	12
49	91
50	21
51	3
52	8
53	51
54	9
55	19
56	1
57	60
58	117
59	56
60	105
61	48
62	85
63	36
64	57
65	20
66	21
67	1
68	143
69	35
70	15
71	4
72	119
73	3
74	95
75	5
76	7
77	11
78	23

[1, 1, 3, 1, 4, 5, 1, 15, 3, 7, 1, 12, 21, 8, 9, 1, 35, 4, 3, 5, 11, 1, 24, 45, 20, 33, 12, 13, 1, 63, 15, 55, 3, 39, 7, 15, 1, 40, 77, 4, 65, 28, 5, 16, 17, 1, 99, 12, 91, 21, 3, 8, 51, 9, 19, 1, 60, 117, 56, 105, 48, 85, 36, 57, 20, 21, 1, 143, 35, 15, 4, 119, 3, 95, 5, 7, 11, 23]

cp's OEIS Frontend

A386823 Triangle read by rows: T(n,k) = numerator((n^2 - k^2)/(n^2 + k^2)), where 0 <= k < n.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	5
7	1
8	15
9	3
10	7
11	1
12	12
13	21
14	8
15	9
16	1
17	35
18	4
19	3
20	5
21	11
22	1
23	24
24	45
25	20
26	33
27	12
28	13
29	1
30	63
31	15
32	55
33	3
34	39
35	7
36	15
37	1
38	40
39	77
40	4
41	65
42	28
43	5
44	16
45	17
46	1
47	99
48	12
49	91
50	21
51	3
52	8
53	51
54	9
55	19
56	1
57	60
58	117
59	56
60	105
61	48
62	85
63	36
64	57
65	20
66	21
67	1
68	143
69	35
70	15
71	4
72	119
73	3
74	95
75	5
76	7
77	11
78	23

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	5
7	1
8	15
9	3
10	7
11	1
12	12
13	21
14	8
15	9
16	1
17	35
18	4
19	3
20	5
21	11
22	1
23	24
24	45
25	20
26	33
27	12
28	13
29	1
30	63
31	15
32	55
33	3
34	39
35	7
36	15
37	1
38	40
39	77
40	4
41	65
42	28
43	5
44	16
45	17
46	1
47	99
48	12
49	91
50	21
51	3
52	8
53	51
54	9
55	19
56	1
57	60
58	117
59	56
60	105
61	48
62	85
63	36
64	57
65	20
66	21
67	1
68	143
69	35
70	15
71	4
72	119
73	3
74	95
75	5
76	7
77	11
78	23

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	5
7	1
8	15
9	3
10	7
11	1
12	12
13	21
14	8
15	9
16	1
17	35
18	4
19	3
20	5
21	11
22	1
23	24
24	45
25	20
26	33
27	12
28	13
29	1
30	63
31	15
32	55
33	3
34	39
35	7
36	15
37	1
38	40
39	77
40	4
41	65
42	28
43	5
44	16
45	17
46	1
47	99
48	12
49	91
50	21
51	3
52	8
53	51
54	9
55	19
56	1
57	60
58	117
59	56
60	105
61	48
62	85
63	36
64	57
65	20
66	21
67	1
68	143
69	35
70	15
71	4
72	119
73	3
74	95
75	5
76	7
77	11
78	23