OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..2000
MATHEMATICA
Select[Range[1500], DigitCount[#, 11, 0]==DigitCount[#, 11, 9]>0&] (* Harvey P. Dale, Aug 11 2015 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved