A386824 - cp's OEIS frontend

A386824 Triangle read by rows: T(n,k) = denominator((n^2 - k^2)/(n^2 + k^2)), where 0 <= k < n.

n	a(n)
1	1
2	1
3	5
4	1
5	5
6	13
7	1
8	17
9	5
10	25
11	1
12	13
13	29
14	17
15	41
16	1
17	37
18	5
19	5
20	13
21	61
22	1
23	25
24	53
25	29
26	65
27	37
28	85
29	1
30	65
31	17
32	73
33	5
34	89
35	25
36	113
37	1
38	41
39	85
40	5
41	97
42	53
43	13
44	65
45	145
46	1
47	101
48	13
49	109
50	29
51	5
52	17
53	149
54	41
55	181
56	1
57	61
58	125
59	65
60	137
61	73
62	157
63	85
64	185
65	101
66	221

[1, 1, 5, 1, 5, 13, 1, 17, 5, 25, 1, 13, 29, 17, 41, 1, 37, 5, 5, 13, 61, 1, 25, 53, 29, 65, 37, 85, 1, 65, 17, 73, 5, 89, 25, 113, 1, 41, 85, 5, 97, 53, 13, 65, 145, 1, 101, 13, 109, 29, 5, 17, 149, 41, 181, 1, 61, 125, 65, 137, 73, 157, 85, 185, 101, 221]

cp's OEIS Frontend

A386824 Triangle read by rows: T(n,k) = denominator((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	5
4	1
5	5
6	13
7	1
8	17
9	5
10	25
11	1
12	13
13	29
14	17
15	41
16	1
17	37
18	5
19	5
20	13
21	61
22	1
23	25
24	53
25	29
26	65
27	37
28	85
29	1
30	65
31	17
32	73
33	5
34	89
35	25
36	113
37	1
38	41
39	85
40	5
41	97
42	53
43	13
44	65
45	145
46	1
47	101
48	13
49	109
50	29
51	5
52	17
53	149
54	41
55	181
56	1
57	61
58	125
59	65
60	137
61	73
62	157
63	85
64	185
65	101
66	221

n	a(n)
1	1
2	1
3	5
4	1
5	5
6	13
7	1
8	17
9	5
10	25
11	1
12	13
13	29
14	17
15	41
16	1
17	37
18	5
19	5
20	13
21	61
22	1
23	25
24	53
25	29
26	65
27	37
28	85
29	1
30	65
31	17
32	73
33	5
34	89
35	25
36	113
37	1
38	41
39	85
40	5
41	97
42	53
43	13
44	65
45	145
46	1
47	101
48	13
49	109
50	29
51	5
52	17
53	149
54	41
55	181
56	1
57	61
58	125
59	65
60	137
61	73
62	157
63	85
64	185
65	101
66	221

n	a(n)
1	1
2	1
3	5
4	1
5	5
6	13
7	1
8	17
9	5
10	25
11	1
12	13
13	29
14	17
15	41
16	1
17	37
18	5
19	5
20	13
21	61
22	1
23	25
24	53
25	29
26	65
27	37
28	85
29	1
30	65
31	17
32	73
33	5
34	89
35	25
36	113
37	1
38	41
39	85
40	5
41	97
42	53
43	13
44	65
45	145
46	1
47	101
48	13
49	109
50	29
51	5
52	17
53	149
54	41
55	181
56	1
57	61
58	125
59	65
60	137
61	73
62	157
63	85
64	185
65	101
66	221