A300728 - cp's OEIS frontend

A300728 a(n) is the smallest positive number k such that k^2 + k*n + n^2 is a perfect square, or 0 if no such k exists.

n	a(n)
0	1
1	0
2	0
3	5
4	0
5	3
6	10
7	8
8	7
9	15
10	6
11	24
12	20
13	35
14	16
15	9
16	5
17	63
18	30
19	80
20	12
21	24
22	48
23	120
24	11
25	15
26	70
27	45
28	32
29	195
30	18
31	224
32	10
33	7
34	126
35	13
36	60
37	323
38	160
39	16
40	24
41	399
42	48
43	440
44	96
45	27
46	240
47	528
48	15
49	56
50	30
51	40
52	140
53	675
54	90
55	33
56	9
57	55
58	390
59	840
60	36
61	899
62	448
63	17
64	20
65	39
66	14
67	1088
68	252
69	91
70	26
71	1224
72	33
73	1295
74	646
75	45

[1, 0, 0, 5, 0, 3, 10, 8, 7, 15, 6, 24, 20, 35, 16, 9, 5, 63, 30, 80, 12, 24, 48, 120, 11, 15, 70, 45, 32, 195, 18, 224, 10, 7, 126, 13, 60, 323, 160, 16, 24, 399, 48, 440, 96, 27, 240, 528, 15, 56, 30, 40, 140, 675, 90, 33, 9, 55, 390, 840, 36, 899, 448, 17, 20, 39, 14, 1088, 252, 91, 26, 1224, 33, 1295, 646, 45]

cp's OEIS Frontend

A300728 a(n) is the smallest positive number k such that k^2 + k*n + n^2 is a perfect square, or 0 if no such k exists.

Table of values

List of values