A138303 - cp's OEIS frontend

A138303 Numbers k such that k(k+1)-1 and k(k+1)+1 are twin primes and k(k+3)-1 and k(k+3)+1 are also twin primes.

n	a(n)
1	3
2	15
3	495
4	624
5	1308
6	1365
7	1494
8	1659
9	1848
10	6363
11	8064
12	12780
13	13908
14	14013
15	16530
16	18018
17	18654
18	28575
19	30885
20	31020
21	38130
22	43674
23	48735
24	50379
25	57198
26	60915
27	61059
28	62943
29	75768
30	76359
31	76569
32	80949
33	81075
34	83028
35	84045
36	86085
37	88185
38	104664
39	105588

[3, 15, 495, 624, 1308, 1365, 1494, 1659, 1848, 6363, 8064, 12780, 13908, 14013, 16530, 18018, 18654, 28575, 30885, 31020, 38130, 43674, 48735, 50379, 57198, 60915, 61059, 62943, 75768, 76359, 76569, 80949, 81075, 83028, 84045, 86085, 88185, 104664, 105588]

cp's OEIS Frontend

A138303 Numbers k such that k(k+1)-1 and k(k+1)+1 are twin primes and k(k+3)-1 and k(k+3)+1 are also twin primes.

Table of values

List of values

cp's OEIS Frontend

A138303 Numbers k such that k*(k+1)-1 and k*(k+1)+1 are twin primes and k*(k+3)-1 and k*(k+3)+1 are also twin primes.

Table of values

List of values

A138303 Numbers k such that k(k+1)-1 and k(k+1)+1 are twin primes and k(k+3)-1 and k(k+3)+1 are also twin primes.