A134765 - cp's OEIS frontend

A134765 Least prime p for which (p-1)/2 - phi(p-1) = n, or 0 if there is no such prime.

n	a(n)
0	3
1	7
2	13
3	19
4	41
5	0
6	37
7	31
8	113
9	43
10	101
11	71
12	73
13	67
14	61
15	79
16	97
17	131
18	109
19	103
20	0
21	0
22	0
23	191
24	0
25	139
26	677
27	127
28	0
29	419
30	157
31	0
32	193
33	0
34	0
35	151
36	0
37	0
38	0
39	199
40	401
41	683
42	181
43	0
44	281
45	0
46	0
47	431
48	0
49	283
50	277
51	0
52	0
53	659
54	461
55	0
56	241
57	211
58	0
59	743
60	313
61	0
62	349
63	271
64	641
65	827

[3, 7, 13, 19, 41, 0, 37, 31, 113, 43, 101, 71, 73, 67, 61, 79, 97, 131, 109, 103, 0, 0, 0, 191, 0, 139, 677, 127, 0, 419, 157, 0, 193, 0, 0, 151, 0, 0, 0, 199, 401, 683, 181, 0, 281, 0, 0, 431, 0, 283, 277, 0, 0, 659, 461, 0, 241, 211, 0, 743, 313, 0, 349, 271, 641, 827]

cp's OEIS Frontend

A134765 Least prime p for which (p-1)/2 - phi(p-1) = n, or 0 if there is no such prime.

Table of values

List of values

n	a(n)
0	3
1	7
2	13
3	19
4	41
5	0
6	37
7	31
8	113
9	43
10	101
11	71
12	73
13	67
14	61
15	79
16	97
17	131
18	109
19	103
20	0
21	0
22	0
23	191
24	0
25	139
26	677
27	127
28	0
29	419
30	157
31	0
32	193
33	0
34	0
35	151
36	0
37	0
38	0
39	199
40	401
41	683
42	181
43	0
44	281
45	0
46	0
47	431
48	0
49	283
50	277
51	0
52	0
53	659
54	461
55	0
56	241
57	211
58	0
59	743
60	313
61	0
62	349
63	271
64	641
65	827

n	a(n)
0	3
1	7
2	13
3	19
4	41
5	0
6	37
7	31
8	113
9	43
10	101
11	71
12	73
13	67
14	61
15	79
16	97
17	131
18	109
19	103
20	0
21	0
22	0
23	191
24	0
25	139
26	677
27	127
28	0
29	419
30	157
31	0
32	193
33	0
34	0
35	151
36	0
37	0
38	0
39	199
40	401
41	683
42	181
43	0
44	281
45	0
46	0
47	431
48	0
49	283
50	277
51	0
52	0
53	659
54	461
55	0
56	241
57	211
58	0
59	743
60	313
61	0
62	349
63	271
64	641
65	827

n	a(n)
0	3
1	7
2	13
3	19
4	41
5	0
6	37
7	31
8	113
9	43
10	101
11	71
12	73
13	67
14	61
15	79
16	97
17	131
18	109
19	103
20	0
21	0
22	0
23	191
24	0
25	139
26	677
27	127
28	0
29	419
30	157
31	0
32	193
33	0
34	0
35	151
36	0
37	0
38	0
39	199
40	401
41	683
42	181
43	0
44	281
45	0
46	0
47	431
48	0
49	283
50	277
51	0
52	0
53	659
54	461
55	0
56	241
57	211
58	0
59	743
60	313
61	0
62	349
63	271
64	641
65	827