OFFSET
1,1
LINKS
Pierre CAMI, Table of n, a(n) for n = 1..13006
FORMULA
a(n) ~ n log n. [Charles R Greathouse IV, Dec 28 2011]
MATHEMATICA
s137Q[n_]:=MemberQ[Partition[IntegerDigits[n], 3, 1], {1, 3, 7}]; Select[ Prime[ Range[9000]], s137Q] (* Harvey P. Dale, May 24 2011 *)
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Pierre CAMI, May 08 2011
STATUS
approved