A281875 - cp's OEIS frontend

A281875 Least k such that phi(k) is the sum of two primes in exactly n ways, or 0 if no such k exists.

n	a(n)
0	1
1	5
2	11
3	23
4	37
5	65
6	61
7	79
8	103
9	161
10	127
11	157
12	143
13	199
14	181
15	307
16	277
17	313
18	241
19	211
20	409
21	341
22	379
23	487
24	331
25	623
26	577
27	551
28	463
29	527
30	421
31	571
32	601
33	673
34	829
35	757
36	877
37	997
38	1571
39	691
40	1039
41	631
42	1009
43	961
44	869
45	967
46	1543
47	989
48	1057
49	1247
50	2411
51	899
52	991
53	1303
54	1147
55	1231
56	1999

[1, 5, 11, 23, 37, 65, 61, 79, 103, 161, 127, 157, 143, 199, 181, 307, 277, 313, 241, 211, 409, 341, 379, 487, 331, 623, 577, 551, 463, 527, 421, 571, 601, 673, 829, 757, 877, 997, 1571, 691, 1039, 631, 1009, 961, 869, 967, 1543, 989, 1057, 1247, 2411, 899, 991, 1303, 1147, 1231, 1999]

cp's OEIS Frontend

A281875 Least k such that phi(k) is the sum of two primes in exactly n ways, or 0 if no such k exists.

Table of values

List of values