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A229203 Primes of the form k^3 - prime(k). 4
5, 971, 54709, 73907, 84991, 124771, 287179, 404851, 511591, 728537, 4095059, 5638691, 6433747, 6857849, 10646627, 11238001, 11850913, 12811423, 13479779, 13822489, 14170957, 16775597, 17574343, 19681267, 20121901, 21950189, 26461619, 39999391, 49025423, 49833529 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(2)=971: 10^3-prime(10)= 1000-29= 971 which is prime.
MAPLE
KD:= proc() local a; a:= k^3-ithprime(k); if isprime(a) then RETURN(a): fi; end: seq(KD(), k=1..1000);
MATHEMATICA
Select[Table[k^3-Prime[k], {k, 1000}], PrimeQ]
PROG
(PARI) for(k=1, 10^3, if(ispseudoprime(KD=eval((k^3-prime(k)))), print1(KD", ")));
CROSSREFS
Sequence in context: A216375 A157332 A332195 * A024072 A119549 A247593
KEYWORD
nonn
AUTHOR
K. D. Bajpai, Sep 15 2013
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)