A045753 - cp's OEIS frontend

A045753 Numbers n such that 4n-1 and 4n+1 are both primes.

n	a(n)
1	1
2	3
3	15
4	18
5	27
6	45
7	48
8	57
9	60
10	78
11	87
12	105
13	108
14	150
15	165
16	207
17	255
18	258
19	273
20	288
21	330
22	357
23	363
24	372
25	402
26	405
27	417
28	447
29	468
30	483
31	507
32	522
33	528
34	567
35	585
36	648
37	672
38	678
39	750
40	780
41	792
42	813
43	825
44	840
45	843
46	867
47	882
48	885
49	918
50	942
51	963
52	1005
53	1023

[1, 3, 15, 18, 27, 45, 48, 57, 60, 78, 87, 105, 108, 150, 165, 207, 255, 258, 273, 288, 330, 357, 363, 372, 402, 405, 417, 447, 468, 483, 507, 522, 528, 567, 585, 648, 672, 678, 750, 780, 792, 813, 825, 840, 843, 867, 882, 885, 918, 942, 963, 1005, 1023]

cp's OEIS Frontend

A045753 Numbers n such that 4n-1 and 4n+1 are both primes.

Table of values

List of values