A083284 - cp's OEIS frontend

A083284 Numbers m such that m and m+2 are both brilliant numbers, where brilliant numbers are semiprimes whose prime factors have an equal number of decimal digits, or whose prime factors are equal.

n	a(n)
1	4
2	527
3	779
4	869
5	899
6	1079
7	1157
8	1271
9	1679
10	4187
11	6497
12	6887
13	24287
14	24881
15	25019
16	29591
17	35237
18	37127
19	37769
20	38807
21	39269
22	39911
23	41309
24	43361
25	44831
26	45347
27	46001
28	46127
29	47261
30	48509
31	48929
32	51809
33	52907
34	54389
35	55481
36	55751
37	55961

[4, 527, 779, 869, 899, 1079, 1157, 1271, 1679, 4187, 6497, 6887, 24287, 24881, 25019, 29591, 35237, 37127, 37769, 38807, 39269, 39911, 41309, 43361, 44831, 45347, 46001, 46127, 47261, 48509, 48929, 51809, 52907, 54389, 55481, 55751, 55961]

cp's OEIS Frontend

A083284 Numbers m such that m and m+2 are both brilliant numbers, where brilliant numbers are semiprimes whose prime factors have an equal number of decimal digits, or whose prime factors are equal.

Table of values

List of values