OFFSET
1,1
COMMENTS
a(n) = A238246(n) - 1. - Reinhard Zumkeller, Feb 20 2014
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
(# - 1)/2&/@Select[Range[1000], Length[Split[IntegerDigits[#, 2]]]==3&] (* Vincenzo Librandi, Feb 22 2014 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved