Have you check out playground?
http://arduino.cc/playground/Main/InterfacingWithHardware#LED
May be not exactly 4017, but you can find other design solution that similar to yours,
and would be easy to adapt for your needs.
Have you check out playground?
http://arduino.cc/playground/Main/InterfacingWithHardware#LED
May be not exactly 4017, but you can find other design solution that similar to yours,
and would be easy to adapt for your needs.