A180442 - cp's OEIS frontend

A180442 Numbers n such that a sum of two or more consecutive squares beginning with n^2 is a square.

n	a(n)
1	1
2	3
3	7
4	9
5	11
6	13
7	15
8	17
9	18
10	20
11	21
12	22
13	25
14	27
15	28
16	30
17	32
18	38
19	44
20	50
21	52
22	55
23	58
24	60
25	64
26	65
27	67
28	73
29	74
30	76
31	83
32	87
33	91
34	103
35	104
36	106
37	112
38	115
39	117
40	119
41	121
42	124
43	128
44	129
45	131
46	132
47	137
48	140
49	142
50	146
51	158
52	168
53	170
54	172
55	175
56	178
57	181
58	183
59	192
60	193
61	197
62	199
63	200
64	204

[1, 3, 7, 9, 11, 13, 15, 17, 18, 20, 21, 22, 25, 27, 28, 30, 32, 38, 44, 50, 52, 55, 58, 60, 64, 65, 67, 73, 74, 76, 83, 87, 91, 103, 104, 106, 112, 115, 117, 119, 121, 124, 128, 129, 131, 132, 137, 140, 142, 146, 158, 168, 170, 172, 175, 178, 181, 183, 192, 193, 197, 199, 200, 204]

cp's OEIS Frontend

A180442 Numbers n such that a sum of two or more consecutive squares beginning with n^2 is a square.

Table of values

List of values

n	a(n)
1	1
2	3
3	7
4	9
5	11
6	13
7	15
8	17
9	18
10	20
11	21
12	22
13	25
14	27
15	28
16	30
17	32
18	38
19	44
20	50
21	52
22	55
23	58
24	60
25	64
26	65
27	67
28	73
29	74
30	76
31	83
32	87
33	91
34	103
35	104
36	106
37	112
38	115
39	117
40	119
41	121
42	124
43	128
44	129
45	131
46	132
47	137
48	140
49	142
50	146
51	158
52	168
53	170
54	172
55	175
56	178
57	181
58	183
59	192
60	193
61	197
62	199
63	200
64	204

n	a(n)
1	1
2	3
3	7
4	9
5	11
6	13
7	15
8	17
9	18
10	20
11	21
12	22
13	25
14	27
15	28
16	30
17	32
18	38
19	44
20	50
21	52
22	55
23	58
24	60
25	64
26	65
27	67
28	73
29	74
30	76
31	83
32	87
33	91
34	103
35	104
36	106
37	112
38	115
39	117
40	119
41	121
42	124
43	128
44	129
45	131
46	132
47	137
48	140
49	142
50	146
51	158
52	168
53	170
54	172
55	175
56	178
57	181
58	183
59	192
60	193
61	197
62	199
63	200
64	204

n	a(n)
1	1
2	3
3	7
4	9
5	11
6	13
7	15
8	17
9	18
10	20
11	21
12	22
13	25
14	27
15	28
16	30
17	32
18	38
19	44
20	50
21	52
22	55
23	58
24	60
25	64
26	65
27	67
28	73
29	74
30	76
31	83
32	87
33	91
34	103
35	104
36	106
37	112
38	115
39	117
40	119
41	121
42	124
43	128
44	129
45	131
46	132
47	137
48	140
49	142
50	146
51	158
52	168
53	170
54	172
55	175
56	178
57	181
58	183
59	192
60	193
61	197
62	199
63	200
64	204