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A065397
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Primes which have no representation p + k*(k+1) / 2, with p prime and k > 0: A000040-Complement of A065396.
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5
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OFFSET
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1,1
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COMMENTS
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Finite? (Checked up to A000040(100000) = 1299709.)
No other terms less than 2*10^9. - T. D. Noe, Mar 26 2008
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LINKS
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MAPLE
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for n from 1 to 7000000 do if isprime(n) = true then foundp := false ; for k from 1 to n do if isprime(n-k*(k+1)/2) = true then foundp := true ; break ; elif n-k*(k+1)/2 < 2 then break ; fi ; od ; if foundp = false then print(n) ; fi ; fi ; od : # R. J. Mathar, Apr 23 2006
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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STATUS
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approved
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