OFFSET
1,1
MATHEMATICA
s34Q[n_]:=Module[{idn7=Partition[IntegerDigits[n, 7], 2, 1]}, MemberQ[ idn7, {3, 4}]]; Select[Range[2000], s34Q[#]&&!s34Q[#+1]&] (* Harvey P. Dale, Feb 01 2013 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved