A120811 - cp's OEIS frontend

A120811 Positive integers n such that n+d+1 is prime for all proper divisors d of n. Generalization of twin prime to all integers.

n	a(n)
1	3
2	5
3	9
4	11
5	17
6	27
7	29
8	35
9	39
10	41
11	59
12	65
13	71
14	101
15	107
16	125
17	137
18	149
19	179
20	191
21	197
22	227
23	237
24	239
25	269
26	281
27	305
28	311
29	347
30	417
31	419
32	431
33	437
34	461
35	521
36	569
37	597
38	599
39	617
40	641
41	659
42	671
43	749
44	755
45	809
46	821
47	827
48	857
49	881
50	905
51	935
52	989
53	1019
54	1031
55	1049

[3, 5, 9, 11, 17, 27, 29, 35, 39, 41, 59, 65, 71, 101, 107, 125, 137, 149, 179, 191, 197, 227, 237, 239, 269, 281, 305, 311, 347, 417, 419, 431, 437, 461, 521, 569, 597, 599, 617, 641, 659, 671, 749, 755, 809, 821, 827, 857, 881, 905, 935, 989, 1019, 1031, 1049]

cp's OEIS Frontend

A120811 Positive integers n such that n+d+1 is prime for all proper divisors d of n. Generalization of twin prime to all integers.

Table of values

List of values