OFFSET
1,1
COMMENTS
a(18) > 25000. - Robert Price, May 22 2017
MATHEMATICA
k = 1; a = {}; Do[k = k*Prime[n]; If[PrimeQ[k - 256]&&k>256, Print[n]; AppendTo[a, n]], {n, 2, 325}]; a
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Apr 21 2008
EXTENSIONS
Drop 3,4 and correct program, a(9)-a(14) from Ray Chandler, Jun 16 2013
a(15)-a(17) from Robert Price, May 22 2017
STATUS
approved