A261074 - cp's OEIS frontend

A261074 Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly two bit positions.

n	a(n)
1	143
2	391
3	493
4	589
5	667
6	1517
7	1739
8	1927
9	2257
10	2419
11	2501
12	2773
13	2867
14	3599
15	4891
16	5293
17	5767
18	5893
19	6499
20	6901
21	7081
22	7169
23	7171
24	7387
25	7811
26	7957
27	8137
28	8453
29	8611
30	9379
31	9991
32	10033
33	10057
34	10379
35	10573
36	11021
37	11227
38	11413
39	11663
40	13081
41	13589
42	13843
43	17947
44	19781
45	21509
46	21877
47	22657
48	23449
49	23701
50	23707
51	25217
52	25283
53	26069
54	26441
55	27029

[143, 391, 493, 589, 667, 1517, 1739, 1927, 2257, 2419, 2501, 2773, 2867, 3599, 4891, 5293, 5767, 5893, 6499, 6901, 7081, 7169, 7171, 7387, 7811, 7957, 8137, 8453, 8611, 9379, 9991, 10033, 10057, 10379, 10573, 11021, 11227, 11413, 11663, 13081, 13589, 13843, 17947, 19781, 21509, 21877, 22657, 23449, 23701, 23707, 25217, 25283, 26069, 26441, 27029]

cp's OEIS Frontend

A261074 Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly two bit positions.

Table of values

List of values