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Search: id:A089490
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| A089490 |
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Third occurrence where (p-q)/(q-3), p and q are primes. |
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+0
1
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| 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
(list; graph; listen)
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OFFSET
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5,1
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PROGRAM
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(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)) ) ) ) }
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CROSSREFS
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Sequence in context: A128342 A154076 A088186 this_sequence A057749 A040070 A048523
Adjacent sequences: A089487 A089488 A089489 this_sequence A089491 A089492 A089493
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Dec 28 2003
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