A155707 - cp's OEIS frontend

A155707 Numbers expressible as a^2 + k b^2 with nonzero integers a,b, for k=2, k=3, k=5 and k=7.

n	a(n)
1	144
2	576
3	1009
4	1129
5	1201
6	1296
7	1801
8	1849
9	2304
10	2521
11	2689
12	2881
13	3049
14	3361
15	3529
16	3600
17	3889
18	4036
19	4201
20	4356
21	4489
22	4516
23	4561
24	4729
25	4804
26	5184
27	5209
28	5569
29	5881
30	5929
31	6841
32	7009
33	7056
34	7204
35	7396
36	7561
37	7681
38	8089
39	8521
40	8689
41	8761
42	8929

[144, 576, 1009, 1129, 1201, 1296, 1801, 1849, 2304, 2521, 2689, 2881, 3049, 3361, 3529, 3600, 3889, 4036, 4201, 4356, 4489, 4516, 4561, 4729, 4804, 5184, 5209, 5569, 5881, 5929, 6841, 7009, 7056, 7204, 7396, 7561, 7681, 8089, 8521, 8689, 8761, 8929]

cp's OEIS Frontend

A155707 Numbers expressible as a^2 + k b^2 with nonzero integers a,b, for k=2, k=3, k=5 and k=7.

Table of values

List of values