A274255 - cp's OEIS frontend

A274255 Numbers n such that n^2 is the sum of three nonzero squares while n is not.

n	a(n)
1	7
2	13
3	15
4	23
5	25
6	28
7	31
8	37
9	39
10	47
11	52
12	55
13	58
14	60
15	63
16	71
17	79
18	85
19	87
20	92
21	95
22	100
23	103
24	111
25	112
26	119
27	124
28	127
29	130
30	135
31	143
32	148
33	151
34	156
35	159
36	167
37	175
38	183
39	188
40	191
41	199
42	207
43	208
44	215
45	220
46	223
47	231
48	232
49	239
50	240
51	247
52	252
53	255
54	263
55	271
56	279
57	284

[7, 13, 15, 23, 25, 28, 31, 37, 39, 47, 52, 55, 58, 60, 63, 71, 79, 85, 87, 92, 95, 100, 103, 111, 112, 119, 124, 127, 130, 135, 143, 148, 151, 156, 159, 167, 175, 183, 188, 191, 199, 207, 208, 215, 220, 223, 231, 232, 239, 240, 247, 252, 255, 263, 271, 279, 284]

cp's OEIS Frontend

A274255 Numbers n such that n^2 is the sum of three nonzero squares while n is not.

Table of values

List of values

n	a(n)
1	7
2	13
3	15
4	23
5	25
6	28
7	31
8	37
9	39
10	47
11	52
12	55
13	58
14	60
15	63
16	71
17	79
18	85
19	87
20	92
21	95
22	100
23	103
24	111
25	112
26	119
27	124
28	127
29	130
30	135
31	143
32	148
33	151
34	156
35	159
36	167
37	175
38	183
39	188
40	191
41	199
42	207
43	208
44	215
45	220
46	223
47	231
48	232
49	239
50	240
51	247
52	252
53	255
54	263
55	271
56	279
57	284

n	a(n)
1	7
2	13
3	15
4	23
5	25
6	28
7	31
8	37
9	39
10	47
11	52
12	55
13	58
14	60
15	63
16	71
17	79
18	85
19	87
20	92
21	95
22	100
23	103
24	111
25	112
26	119
27	124
28	127
29	130
30	135
31	143
32	148
33	151
34	156
35	159
36	167
37	175
38	183
39	188
40	191
41	199
42	207
43	208
44	215
45	220
46	223
47	231
48	232
49	239
50	240
51	247
52	252
53	255
54	263
55	271
56	279
57	284

n	a(n)
1	7
2	13
3	15
4	23
5	25
6	28
7	31
8	37
9	39
10	47
11	52
12	55
13	58
14	60
15	63
16	71
17	79
18	85
19	87
20	92
21	95
22	100
23	103
24	111
25	112
26	119
27	124
28	127
29	130
30	135
31	143
32	148
33	151
34	156
35	159
36	167
37	175
38	183
39	188
40	191
41	199
42	207
43	208
44	215
45	220
46	223
47	231
48	232
49	239
50	240
51	247
52	252
53	255
54	263
55	271
56	279
57	284