A146984 - cp's OEIS frontend

A146984 List of integer-valued contraharmonic means (u^2+v^2)/(u+v) of two positive integers u and v (with u < v) ordered by increasing u and increasing v (u = 2, 3, 4, ...; v = u+1, u+2, ...).

n	a(n)
1	5
2	5
3	13
4	10
5	25
6	17
7	41
8	10
9	15
10	26
11	61
12	37
13	85
14	20
15	50
16	113
17	15
18	39
19	65
20	145
21	13
22	25
23	34
24	82
25	181
26	101
27	221
28	17
29	20
30	30
31	52
32	75
33	122
34	265
35	145
36	313
37	29
38	35
39	74
40	170
41	365
42	25
43	29
44	51
45	65
46	123
47	197
48	421
49	40
50	100
51	226
52	481
53	257
54	545
55	30
56	45
57	53
58	78
59	130
60	183

[5, 5, 13, 10, 25, 17, 41, 10, 15, 26, 61, 37, 85, 20, 50, 113, 15, 39, 65, 145, 13, 25, 34, 82, 181, 101, 221, 17, 20, 30, 52, 75, 122, 265, 145, 313, 29, 35, 74, 170, 365, 25, 29, 51, 65, 123, 197, 421, 40, 100, 226, 481, 257, 545, 30, 45, 53, 78, 130, 183]

cp's OEIS Frontend

A146984 List of integer-valued contraharmonic means (u^2+v^2)/(u+v) of two positive integers u and v (with u < v) ordered by increasing u and increasing v (u = 2, 3, 4, ...; v = u+1, u+2, ...).

Table of values

List of values

n	a(n)
1	5
2	5
3	13
4	10
5	25
6	17
7	41
8	10
9	15
10	26
11	61
12	37
13	85
14	20
15	50
16	113
17	15
18	39
19	65
20	145
21	13
22	25
23	34
24	82
25	181
26	101
27	221
28	17
29	20
30	30
31	52
32	75
33	122
34	265
35	145
36	313
37	29
38	35
39	74
40	170
41	365
42	25
43	29
44	51
45	65
46	123
47	197
48	421
49	40
50	100
51	226
52	481
53	257
54	545
55	30
56	45
57	53
58	78
59	130
60	183

n	a(n)
1	5
2	5
3	13
4	10
5	25
6	17
7	41
8	10
9	15
10	26
11	61
12	37
13	85
14	20
15	50
16	113
17	15
18	39
19	65
20	145
21	13
22	25
23	34
24	82
25	181
26	101
27	221
28	17
29	20
30	30
31	52
32	75
33	122
34	265
35	145
36	313
37	29
38	35
39	74
40	170
41	365
42	25
43	29
44	51
45	65
46	123
47	197
48	421
49	40
50	100
51	226
52	481
53	257
54	545
55	30
56	45
57	53
58	78
59	130
60	183

n	a(n)
1	5
2	5
3	13
4	10
5	25
6	17
7	41
8	10
9	15
10	26
11	61
12	37
13	85
14	20
15	50
16	113
17	15
18	39
19	65
20	145
21	13
22	25
23	34
24	82
25	181
26	101
27	221
28	17
29	20
30	30
31	52
32	75
33	122
34	265
35	145
36	313
37	29
38	35
39	74
40	170
41	365
42	25
43	29
44	51
45	65
46	123
47	197
48	421
49	40
50	100
51	226
52	481
53	257
54	545
55	30
56	45
57	53
58	78
59	130
60	183