A239975 - cp's OEIS frontend

A239975 Least k>0 such that n^2 + (n+k)^2 is a square, or -1 if no such k exists.

n	a(n)
5	7
6	2
7	17
8	7
9	3
10	14
11	49
12	4
13	71
14	34
15	5
16	14
17	127
18	6
19	161
20	1
21	7
22	98
23	241
24	8
25	35
26	142
27	9
28	17
29	391
30	10
31	449
32	28
33	11
34	254
35	49
36	12
37	647
38	322
39	13
40	2
41	799
42	14
43	881
44	73
45	15
46	482
47	1057
48	7
49	119
50	70
51	17
52	113
53	1351
54	18
55	77
56	34
57	19
58	782
59	1681
60	3
61	1799
62	898
63	21
64	56
65	7
66	22
67	2177
68	217
69	23

[7, 2, 17, 7, 3, 14, 49, 4, 71, 34, 5, 14, 127, 6, 161, 1, 7, 98, 241, 8, 35, 142, 9, 17, 391, 10, 449, 28, 11, 254, 49, 12, 647, 322, 13, 2, 799, 14, 881, 73, 15, 482, 1057, 7, 119, 70, 17, 113, 1351, 18, 77, 34, 19, 782, 1681, 3, 1799, 898, 21, 56, 7, 22, 2177, 217, 23]

cp's OEIS Frontend

A239975 Least k>0 such that n^2 + (n+k)^2 is a square, or -1 if no such k exists.

Table of values

List of values