|
| |
|
|
A084997
|
|
Numbers which can be written as the sum as well as the product of 2 primes, not necessarily the same.
|
|
1
| |
|
|
4, 6, 10, 14, 15, 21, 22, 26, 33, 34, 38, 39, 46, 55, 58, 62, 69, 74, 82, 85, 86, 91, 94, 106, 111, 115, 118, 122, 129, 133, 134, 141, 142, 146, 158, 159, 166, 178, 183, 194, 201, 202, 206, 213, 214, 218, 226, 235, 253, 254, 259, 262, 265, 274, 278
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Intersection of A014091 and A001358; A100484 is a subsequence.
|
|
|
LINKS
| Eric Weisstein's World of Mathematics, Goldbach Conjecture
Index entries for sequences related to Goldbach conjecture
|
|
|
EXAMPLE
| n=14: 11 + 3 = 14 and 2 * 7 = 14, therefore 14 is a term;
n=15: 13 + 2 = 15 and 3 * 5 = 15, therefore 15 is a term.
E.g. 21 = 19 + 2, 19 and 2 are prime and 21 = 7 * 3, 7 and 3 are primes.
Example: 9 = 3*3 and 2+7
|
|
|
CROSSREFS
| Cf. A014091, A100962.
Sequence in context: A137699 A144592 A065073 * A175706 A110507 A134624
Adjacent sequences: A084994 A084995 A084996 * A084998 A084999 A085000
|
|
|
KEYWORD
| nonn,easy
|
|
|
AUTHOR
| Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 30 2003
|
|
|
EXTENSIONS
| Corrected and extended by Michael Lahm (mpl148(AT)psu.edu), Apr 24 2006
More terms from Joseph A. Agnew (jaa249(AT)psu.edu), Apr 30 2006
|
| |
|
|
