OFFSET
1,2
LINKS
K. D. Bajpai, Table of n, a(n) for n = 1..5250
EXAMPLE
13 is in the sequence because 13+4= 17, 13+4^2= 29, 13+4^4= 269, are all prime.
27 is in the sequence because 27+4= 31, 27+4^2= 43, 27+4^4= 283, are all prime.
MAPLE
KD := proc() local a, b, d, k; k:=4; a:=n+k; b:=n+k^2; d:=n+k^4; if isprime(a)and isprime(b) and isprime(d) then RETURN (n); fi; end: seq(KD(), n=1..10000);
CROSSREFS
KEYWORD
nonn
AUTHOR
K. D. Bajpai, Dec 15 2013
STATUS
approved