OFFSET
1,1
COMMENTS
A prime generator function based on the primes and the digit set {1,3,7,9}.
MATHEMATICA
a={1, 3, 7, 9} digits=3*200 b=Table[Prime[n]*10+a[[1+Mod[n, 4]]], {n, 1, digits}] c=Table[If[PrimeQ[b[[n]]]==True, b[[n]], 0], {n, 1, digits}] d=Delete[Union[c], 1]
CROSSREFS
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Jan 05 2004
STATUS
approved