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A103913 Numbers n such that 2*P(n)+1, 2*P(n+1)+1, 2*P(n+2)-3, 2*P(n+3)+3 are also consecutive primes with P(i)=i-th prime. 2
854016, 1668928, 1670977, 2406867, 2835695, 3212701, 3262059, 3678424, 4118273, 4952356 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
PROG
(PARI) isok(n) = {my(p=2*prime(n)+1, q=2*prime(n+1)+1, r=2*prime(n+2)-3, s=2*prime(n+3)+3); isprime(p) && (nextprime(p+1) == q) && (nextprime(q+1) == r) && (nextprime(r+1) == s); } \\ Michel Marcus, Sep 24 2019
CROSSREFS
Sequence in context: A236978 A209949 A233716 * A151939 A172846 A115546
KEYWORD
nonn,more
AUTHOR
Pierre CAMI, Feb 21 2005
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)