OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[1100], DigitCount[#, 11, 2]==DigitCount[#, 11, 6]>0&] (* Harvey P. Dale, Jul 09 2014 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved
