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Search: id:A089488
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| A089488 |
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First occurrence where (p-q)/(q-3), p and q are primes. |
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+0
1
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| 3, 3, 7, 3, 3, 3, 3, 3, 7, 3, 7, 3, 3, 43, 3, 7, 19, 7, 3, 3, 7, 3, 3, 7, 19, 3, 13, 3, 3, 31, 13, 3, 3, 7, 3, 3, 3, 3, 13, 7, 7, 13, 3, 7, 3, 19, 3, 19, 3, 7, 7, 3, 7, 7, 19, 19, 3, 3, 13, 7, 19, 3, 19, 13, 19, 7, 3, 3, 3, 7, 3, 13, 3, 7, 3, 3, 7, 19, 3, 3, 13, 3, 13, 19, 19, 3, 13, 7, 3, 3, 3, 3, 3
(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: A059527 A101457 A076217 this_sequence A076560 A096915 A100803
Adjacent sequences: A089485 A089486 A089487 this_sequence A089489 A089490 A089491
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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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