A140612 - cp's OEIS frontend

A140612 Integers k such that both k and k+1 are the sum of 2 squares.

n	a(n)
1	0
2	1
3	4
4	8
5	9
6	16
7	17
8	25
9	36
10	40
11	49
12	52
13	64
14	72
15	73
16	80
17	81
18	89
19	97
20	100
21	116
22	121
23	136
24	144
25	145
26	148
27	169
28	180
29	193
30	196
31	225
32	232
33	233
34	241
35	244
36	256
37	260
38	288
39	289
40	292
41	305
42	313
43	324
44	337
45	360
46	361
47	369
48	388
49	400
50	404
51	409
52	424
53	441
54	449
55	457

[0, 1, 4, 8, 9, 16, 17, 25, 36, 40, 49, 52, 64, 72, 73, 80, 81, 89, 97, 100, 116, 121, 136, 144, 145, 148, 169, 180, 193, 196, 225, 232, 233, 241, 244, 256, 260, 288, 289, 292, 305, 313, 324, 337, 360, 361, 369, 388, 400, 404, 409, 424, 441, 449, 457]

cp's OEIS Frontend

A140612 Integers k such that both k and k+1 are the sum of 2 squares.

Table of values

List of values

n	a(n)
1	0
2	1
3	4
4	8
5	9
6	16
7	17
8	25
9	36
10	40
11	49
12	52
13	64
14	72
15	73
16	80
17	81
18	89
19	97
20	100
21	116
22	121
23	136
24	144
25	145
26	148
27	169
28	180
29	193
30	196
31	225
32	232
33	233
34	241
35	244
36	256
37	260
38	288
39	289
40	292
41	305
42	313
43	324
44	337
45	360
46	361
47	369
48	388
49	400
50	404
51	409
52	424
53	441
54	449
55	457

n	a(n)
1	0
2	1
3	4
4	8
5	9
6	16
7	17
8	25
9	36
10	40
11	49
12	52
13	64
14	72
15	73
16	80
17	81
18	89
19	97
20	100
21	116
22	121
23	136
24	144
25	145
26	148
27	169
28	180
29	193
30	196
31	225
32	232
33	233
34	241
35	244
36	256
37	260
38	288
39	289
40	292
41	305
42	313
43	324
44	337
45	360
46	361
47	369
48	388
49	400
50	404
51	409
52	424
53	441
54	449
55	457

n	a(n)
1	0
2	1
3	4
4	8
5	9
6	16
7	17
8	25
9	36
10	40
11	49
12	52
13	64
14	72
15	73
16	80
17	81
18	89
19	97
20	100
21	116
22	121
23	136
24	144
25	145
26	148
27	169
28	180
29	193
30	196
31	225
32	232
33	233
34	241
35	244
36	256
37	260
38	288
39	289
40	292
41	305
42	313
43	324
44	337
45	360
46	361
47	369
48	388
49	400
50	404
51	409
52	424
53	441
54	449
55	457