A281827 - cp's OEIS frontend

A281827 Least number k such that k is the sum of two primes in exactly n ways, where both primes are of the form x^2 + y^2, or -1 if no such k exists.

n	a(n)
0	0
1	4
2	34
3	58
4	102
5	114
6	186
7	282
8	246
9	210
10	354
11	390
12	330
13	426
14	462
15	666
16	906
17	774
18	750
19	690
20	630
21	870
22	1026
23	990
24	1122
25	1134
26	1110
27	1050
28	1170
29	1554
30	1914
31	1290
32	1530
33	1650
34	1470
35	1770
36	1830
37	2142
38	1710
39	2070
40	2874
41	1950
42	2250
43	1890
44	2838
45	2370
46	2550
47	2490
48	2430
49	3354
50	2670
51	3726

[0, 4, 34, 58, 102, 114, 186, 282, 246, 210, 354, 390, 330, 426, 462, 666, 906, 774, 750, 690, 630, 870, 1026, 990, 1122, 1134, 1110, 1050, 1170, 1554, 1914, 1290, 1530, 1650, 1470, 1770, 1830, 2142, 1710, 2070, 2874, 1950, 2250, 1890, 2838, 2370, 2550, 2490, 2430, 3354, 2670, 3726]

cp's OEIS Frontend

A281827 Least number k such that k is the sum of two primes in exactly n ways, where both primes are of the form x^2 + y^2, or -1 if no such k exists.

Table of values

List of values