OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[ Range[ 225 ], (Count[ IntegerDigits[ #, 5 ], 1 ]==2)& ]
PROG
(PARI) is(n)=my(v=digits(n, 5)); sum(i=1, #v, v[i]==1)==2 \\ Charles R Greathouse IV, Mar 31 2014
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved