A155715 - cp's OEIS frontend

A155715 Least number expressible as a^2 + k b^2 with positive integers a,b, for each k=1,...,n.

n	a(n)
1	2
2	17
3	73
4	73
5	241
6	241
7	1009
8	1009
9	1009
10	1009
11	7561
12	7561
13	21961
14	32356
15	32356
16	32356
17	44641
18	44641
19	349924
20	349924
21	349924
22	349924
23	1399696
24	1399696
25	1399696
26	3027249
27	3027249
28	3027249
29	4349601
30	4349601
31	18567396
32	18567396
33	18567396

[2, 17, 73, 73, 241, 241, 1009, 1009, 1009, 1009, 7561, 7561, 21961, 32356, 32356, 32356, 44641, 44641, 349924, 349924, 349924, 349924, 1399696, 1399696, 1399696, 3027249, 3027249, 3027249, 4349601, 4349601, 18567396, 18567396, 18567396]

cp's OEIS Frontend

A155715 Least number expressible as a^2 + k b^2 with positive integers a,b, for each k=1,...,n.

Table of values

List of values