|
Search: id:A108249
|
|
|
| A108249 |
|
Consider primes p and q such that p = 3^k + 20 and q = 3^(k+1) + 20 for some k; sequence gives values of p. |
|
+0
1
|
| |
|
|
OFFSET
|
0,1
|
|
|
COMMENT
|
It appears that these values are merely conjectures. - N. J. A. Sloane (njas(AT)research.att.com), Jun 30 2005
|
|
EXAMPLE
|
3^1 + 20 = 23, 3^2 + 20 = 29.
|
|
PROGRAM
|
(PARI) g(m, n, b) = { for(x=0, n, y=m+b^x+b%2; z=m+b^(x+1)+b%2; if(isprime(y)&isprime(z), print1(y", ") ) ) }
|
|
CROSSREFS
|
Sequence in context: A108111 A085713 A102904 this_sequence A045120 A097436 A063980
Adjacent sequences: A108246 A108247 A108248 this_sequence A108250 A108251 A108252
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Cino Hilliard (hillcino368(AT)gmail.com), Jun 29 2005
|
|
|
Search completed in 0.002 seconds
|
