OFFSET
1,1
LINKS
Zak Seidov, Table of n, a(n) for n = 1..1000
EXAMPLE
a(1) = 79 = (prime(20)+...+prime(24))/5 = (71+ 73+ 79+ 83+ 89)/5
a(2) = 281 = (prime(58)+...+prime(62))/5 = (271+ 277+ 281+ 283+ 293)/5
a(8) = 887 = (prime(151)+...+prime(155))/5 = (877+ 881+ 883+ 887+ 907)/5
MATHEMATICA
Select[(Mean /@ Partition[Prime[Range[1000]], 5, 1]), PrimeQ]
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 20 2012
STATUS
approved