|
Search: id:A089553
|
|
|
| A089553 |
|
Seventh occurrence where (p-q)/(q-7), p and q are primes. |
|
+0
1
|
|
| 47, 43, 53, 37, 113, 101, 29, 29, 173, 61, 89, 173, 43, 43, 137, 71, 59, 59, 29, 47, 71, 29, 53, 47, 59, 43, 53, 23
(list; graph; listen)
|
|
|
OFFSET
|
7,1
|
|
|
PROGRAM
|
(PARI) \ r is the occurrence desired 1=first, 2=second etc. \d is the amount we take from q diff2sqp2(n, r, d) = { forprime(q=d+1, n, c=0; forprime(p=q+1, n, y=(p-q)/(q-d); if(y==floor(y), if(isprime(y), c++; if(c==r, print1(y", "); break)) ) ) ) }
|
|
CROSSREFS
|
Sequence in context: A065610 A033367 A052352 this_sequence A165868 A042103 A084366
Adjacent sequences: A089550 A089551 A089552 this_sequence A089554 A089555 A089556
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Cino Hilliard (hillcino368(AT)gmail.com), Dec 28 2003
|
|
|
Search completed in 0.002 seconds
|
