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A089490
Third occurrence where (p-q)/(q-3), p and q are primes.
0
13, 19, 37, 37, 19, 13, 13, 13, 67, 19, 97, 31, 19, 97, 19, 37, 103, 61, 13, 43, 67, 19, 31, 61, 37, 19, 13, 79, 61, 13, 43, 31, 13, 31, 19, 43, 19, 37, 31, 13, 19, 37, 19, 13, 31, 13, 19, 19, 19, 19, 13, 13, 19, 13
OFFSET
5,1
PROG
(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: A154076 A275660 A088186 * A057749 A040070 A322923
KEYWORD
easy,nonn
AUTHOR
Cino Hilliard, Dec 28 2003
STATUS
approved