A088498 - cp's OEIS frontend

A088498 Numbers k such that k^2 + k - 1 and k^2 + k + 1 are twin primes and (k + 1)(k + 1) + k + 1 - 1 and (k + 1)(k + 1) + k + 1 + 1 are also twin primes.

n	a(n)
1	2
2	5
3	20
4	455
5	1364
6	2204
7	2450
8	2729
9	8540
10	18485
11	32198
12	32318
13	32780
14	45863
15	61214
16	72554
17	72560
18	82145
19	83258
20	86603
21	91370
22	95198
23	125333
24	149330
25	176888
26	182909
27	185534
28	210845
29	225665
30	226253
31	288419
32	343160
33	350090
34	403940
35	411500

[2, 5, 20, 455, 1364, 2204, 2450, 2729, 8540, 18485, 32198, 32318, 32780, 45863, 61214, 72554, 72560, 82145, 83258, 86603, 91370, 95198, 125333, 149330, 176888, 182909, 185534, 210845, 225665, 226253, 288419, 343160, 350090, 403940, 411500]

cp's OEIS Frontend

A088498 Numbers k such that k^2 + k - 1 and k^2 + k + 1 are twin primes and (k + 1)(k + 1) + k + 1 - 1 and (k + 1)(k + 1) + k + 1 + 1 are also twin primes.

Table of values

List of values

cp's OEIS Frontend

A088498 Numbers k such that k^2 + k - 1 and k^2 + k + 1 are twin primes and (k + 1)*(k + 1) + k + 1 - 1 and (k + 1)*(k + 1) + k + 1 + 1 are also twin primes.

Table of values

List of values

A088498 Numbers k such that k^2 + k - 1 and k^2 + k + 1 are twin primes and (k + 1)(k + 1) + k + 1 - 1 and (k + 1)(k + 1) + k + 1 + 1 are also twin primes.