A050795 - cp's OEIS frontend

A050795 Numbers n such that n^2 - 1 is expressible as the sum of two nonzero squares in at least one way.

n	a(n)
1	3
2	9
3	17
4	19
5	33
6	35
7	51
8	73
9	81
10	99
11	105
12	129
13	145
14	147
15	161
16	163
17	179
18	195
19	201
20	233
21	243
22	273
23	289
24	291
25	297
26	339
27	361
28	387
29	393
30	451
31	465
32	467
33	483
34	489
35	513
36	521
37	577
38	579
39	585
40	611
41	627
42	649
43	675
44	721
45	723
46	739
47	777
48	801
49	809
50	819
51	849
52	883
53	899
54	915

[3, 9, 17, 19, 33, 35, 51, 73, 81, 99, 105, 129, 145, 147, 161, 163, 179, 195, 201, 233, 243, 273, 289, 291, 297, 339, 361, 387, 393, 451, 465, 467, 483, 489, 513, 521, 577, 579, 585, 611, 627, 649, 675, 721, 723, 739, 777, 801, 809, 819, 849, 883, 899, 915]

cp's OEIS Frontend

A050795 Numbers n such that n^2 - 1 is expressible as the sum of two nonzero squares in at least one way.

Table of values

List of values

n	a(n)
1	3
2	9
3	17
4	19
5	33
6	35
7	51
8	73
9	81
10	99
11	105
12	129
13	145
14	147
15	161
16	163
17	179
18	195
19	201
20	233
21	243
22	273
23	289
24	291
25	297
26	339
27	361
28	387
29	393
30	451
31	465
32	467
33	483
34	489
35	513
36	521
37	577
38	579
39	585
40	611
41	627
42	649
43	675
44	721
45	723
46	739
47	777
48	801
49	809
50	819
51	849
52	883
53	899
54	915

n	a(n)
1	3
2	9
3	17
4	19
5	33
6	35
7	51
8	73
9	81
10	99
11	105
12	129
13	145
14	147
15	161
16	163
17	179
18	195
19	201
20	233
21	243
22	273
23	289
24	291
25	297
26	339
27	361
28	387
29	393
30	451
31	465
32	467
33	483
34	489
35	513
36	521
37	577
38	579
39	585
40	611
41	627
42	649
43	675
44	721
45	723
46	739
47	777
48	801
49	809
50	819
51	849
52	883
53	899
54	915

n	a(n)
1	3
2	9
3	17
4	19
5	33
6	35
7	51
8	73
9	81
10	99
11	105
12	129
13	145
14	147
15	161
16	163
17	179
18	195
19	201
20	233
21	243
22	273
23	289
24	291
25	297
26	339
27	361
28	387
29	393
30	451
31	465
32	467
33	483
34	489
35	513
36	521
37	577
38	579
39	585
40	611
41	627
42	649
43	675
44	721
45	723
46	739
47	777
48	801
49	809
50	819
51	849
52	883
53	899
54	915