A185718 - cp's OEIS frontend

A185718 For positive n with prime decomposition n = Product_{j=1..m} (p_j^k_j) define A_n = Sum_{j=1..m} (p_j*k_j) and B_n = Sum_{j=1..m} (p_j^k_j). This sequence gives those n for which A_n and B_n are both prime and B_n = A_n + 2 (i.e., form a twin prime pair).

n	a(n)
1	40
2	88
3	184
4	424
5	808
6	1048
7	1384
8	1528
9	1864
10	2104
11	2184
12	3080
13	4504
14	4744
15	5224
16	5928
17	6440
18	6568
19	7224
20	8104
21	8360
22	8840
23	9784
24	10264
25	10472
26	11480
27	11544
28	11848
29	12808
30	12904
31	14136
32	14840
33	14968
34	16280
35	16648
36	18664
37	19608
38	20344
39	21080
40	22040
41	23240
42	23704
43	24440
44	24648
45	24920
46	26008
47	26584
48	27384
49	27608
50	27688
51	28264
52	28952
53	29240

[40, 88, 184, 424, 808, 1048, 1384, 1528, 1864, 2104, 2184, 3080, 4504, 4744, 5224, 5928, 6440, 6568, 7224, 8104, 8360, 8840, 9784, 10264, 10472, 11480, 11544, 11848, 12808, 12904, 14136, 14840, 14968, 16280, 16648, 18664, 19608, 20344, 21080, 22040, 23240, 23704, 24440, 24648, 24920, 26008, 26584, 27384, 27608, 27688, 28264, 28952, 29240]

cp's OEIS Frontend

A185718 For positive n with prime decomposition n = Product_{j=1..m} (p_j^k_j) define A_n = Sum_{j=1..m} (p_j*k_j) and B_n = Sum_{j=1..m} (p_j^k_j). This sequence gives those n for which A_n and B_n are both prime and B_n = A_n + 2 (i.e., form a twin prime pair).

Table of values

List of values