A248194 - cp's OEIS frontend

A248194 Positive integers n such that the equation x^2 - ny^2 = n(n+1)/2 has integer solutions.

n	a(n)
1	1
2	3
3	8
4	9
5	17
6	19
7	24
8	25
9	33
10	49
11	51
12	57
13	67
14	72
15	73
16	81
17	88
18	89
19	96
20	97
21	99
22	121
23	129
24	136
25	147
26	152
27	163
28	169
29	177
30	179
31	193
32	201
33	211
34	225
35	233
36	241
37	243
38	249
39	264
40	288
41	289
42	297
43	313
44	337
45	339
46	352
47	361
48	369
49	387
50	393
51	408
52	409
53	441
54	449
55	451
56	456
57	457

[1, 3, 8, 9, 17, 19, 24, 25, 33, 49, 51, 57, 67, 72, 73, 81, 88, 89, 96, 97, 99, 121, 129, 136, 147, 152, 163, 169, 177, 179, 193, 201, 211, 225, 233, 241, 243, 249, 264, 288, 289, 297, 313, 337, 339, 352, 361, 369, 387, 393, 408, 409, 441, 449, 451, 456, 457]

cp's OEIS Frontend

A248194 Positive integers n such that the equation x^2 - ny^2 = n(n+1)/2 has integer solutions.

Table of values

List of values

n	a(n)
1	1
2	3
3	8
4	9
5	17
6	19
7	24
8	25
9	33
10	49
11	51
12	57
13	67
14	72
15	73
16	81
17	88
18	89
19	96
20	97
21	99
22	121
23	129
24	136
25	147
26	152
27	163
28	169
29	177
30	179
31	193
32	201
33	211
34	225
35	233
36	241
37	243
38	249
39	264
40	288
41	289
42	297
43	313
44	337
45	339
46	352
47	361
48	369
49	387
50	393
51	408
52	409
53	441
54	449
55	451
56	456
57	457

n	a(n)
1	1
2	3
3	8
4	9
5	17
6	19
7	24
8	25
9	33
10	49
11	51
12	57
13	67
14	72
15	73
16	81
17	88
18	89
19	96
20	97
21	99
22	121
23	129
24	136
25	147
26	152
27	163
28	169
29	177
30	179
31	193
32	201
33	211
34	225
35	233
36	241
37	243
38	249
39	264
40	288
41	289
42	297
43	313
44	337
45	339
46	352
47	361
48	369
49	387
50	393
51	408
52	409
53	441
54	449
55	451
56	456
57	457

cp's OEIS Frontend

A248194 Positive integers n such that the equation x^2 - n*y^2 = n*(n+1)/2 has integer solutions.

Table of values

List of values

A248194 Positive integers n such that the equation x^2 - ny^2 = n(n+1)/2 has integer solutions.

n	a(n)
1	1
2	3
3	8
4	9
5	17
6	19
7	24
8	25
9	33
10	49
11	51
12	57
13	67
14	72
15	73
16	81
17	88
18	89
19	96
20	97
21	99
22	121
23	129
24	136
25	147
26	152
27	163
28	169
29	177
30	179
31	193
32	201
33	211
34	225
35	233
36	241
37	243
38	249
39	264
40	288
41	289
42	297
43	313
44	337
45	339
46	352
47	361
48	369
49	387
50	393
51	408
52	409
53	441
54	449
55	451
56	456
57	457