A256620 - cp's OEIS frontend

A256620 Numbers n such that n is both the average of some twin prime pair p, q (q = p+2) (i.e., n = p+1 = q-1) and is also the arithmetic mean of the four numbers consisting of the two primes before p and the two primes after q.

n	a(n)
1	12
2	30
3	42
4	312
5	600
6	858
7	1032
8	1290
9	1698
10	2112
11	2688
12	3768
13	4218
14	4230
15	4260
16	5850
17	6132
18	6552
19	6702
20	7212
21	7308
22	8292
23	9420
24	9930
25	11970
26	12042
27	12378
28	15972
29	17190
30	17598
31	17922
32	19470
33	19890
34	21600
35	24180
36	26862
37	30012
38	30852
39	32118

[12, 30, 42, 312, 600, 858, 1032, 1290, 1698, 2112, 2688, 3768, 4218, 4230, 4260, 5850, 6132, 6552, 6702, 7212, 7308, 8292, 9420, 9930, 11970, 12042, 12378, 15972, 17190, 17598, 17922, 19470, 19890, 21600, 24180, 26862, 30012, 30852, 32118]

cp's OEIS Frontend

A256620 Numbers n such that n is both the average of some twin prime pair p, q (q = p+2) (i.e., n = p+1 = q-1) and is also the arithmetic mean of the four numbers consisting of the two primes before p and the two primes after q.

Table of values

List of values