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A253925
Primes p such that both (p^2 + 5)/6 and (p^4 + 5)/6 are prime.
4
127, 1009, 1709, 2087, 2393, 2969, 3221, 3347, 7309, 7757, 7883, 10529, 11411, 12923, 17569, 18269, 21799, 23311, 23633, 24877, 25703, 26839, 27091, 29429, 35461, 35603, 38431, 39367, 39761, 41887, 42967, 43037, 45361, 45989, 47699, 52163, 59093, 63629, 65323, 67103, 68041, 69481, 70937, 74843, 77813, 77867
OFFSET
1,1
COMMENTS
Intersection of A118915 and A247478.
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
EXAMPLE
a(1)=127=A118915(9)=A247478(9). a(2)=1009=A118915(45)=A247478(22).
PROG
(PARI) forprime(p=5, 1e6, if(isprime((p^2+5)/6) && isprime((p^4+5)/6), print1(p", "))) \\ Charles R Greathouse IV, Jan 19 2015
CROSSREFS
Sequence in context: A299818 A236304 A075942 * A196658 A077361 A225148
KEYWORD
nonn
AUTHOR
Zak Seidov, Jan 19 2015
STATUS
approved