A277254 - cp's OEIS frontend

A277254 Numbers k such that p = k - phi(k) < q = k - lambda(k), and p and q are both primes, where phi(k) = A000010(k) and lambda(k) = A002322(k).

n	a(n)
1	15
2	33
3	35
4	65
5	77
6	87
7	91
8	95
9	119
10	123
11	143
12	185
13	215
14	221
15	247
16	255
17	259
18	287
19	329
20	341
21	377
22	395
23	407
24	427
25	437
26	455
27	473
28	485
29	511
30	515
31	537
32	573
33	595
34	635
35	705
36	713
37	717
38	721
39	749
40	767
41	779
42	793
43	795
44	803
45	805
46	815
47	817
48	843
49	869
50	871
51	885
52	899
53	923
54	965
55	1001

[15, 33, 35, 65, 77, 87, 91, 95, 119, 123, 143, 185, 215, 221, 247, 255, 259, 287, 329, 341, 377, 395, 407, 427, 437, 455, 473, 485, 511, 515, 537, 573, 595, 635, 705, 713, 717, 721, 749, 767, 779, 793, 795, 803, 805, 815, 817, 843, 869, 871, 885, 899, 923, 965, 1001]

cp's OEIS Frontend

A277254 Numbers k such that p = k - phi(k) < q = k - lambda(k), and p and q are both primes, where phi(k) = A000010(k) and lambda(k) = A002322(k).

Table of values

List of values