Cubefree Word

A cubefree word contains no cubed words as subwords. The number of binary cubefree words of length , 2, ... are 2, 4, 6, 10, 16, 24, 36, 56, 80, 118, ... (OEIS A028445). Binary cubefree words satisfy

The number of ternary cubefree words of length , 2, ... are 3, 9, 24, 66, 180, 486, 1314, ... (OEIS A051042). The number of quaternary cubefree words of length , 2, ... are 4, 16, 60, 228, 864, 3264, 12336, ... (OEIS A051043).

Wolfram Web Resources

Mathematica » The #1 tool for creating Demonstrations and anything technical.	Wolfram\|Alpha » Explore anything with the first computational knowledge engine.	Wolfram Demonstrations Project » Explore thousands of free applications across science, mathematics, engineering, technology, business, art, finance, social sciences, and more.
Computerbasedmath.org » Join the initiative for modernizing math education.	Online Integral Calculator » Solve integrals with Wolfram\|Alpha.	Step-by-step Solutions » Walk through homework problems step-by-step from beginning to end. Hints help you try the next step on your own.
Wolfram Problem Generator » Unlimited random practice problems and answers with built-in Step-by-step solutions. Practice online or make a printable study sheet.	Wolfram Education Portal » Collection of teaching and learning tools built by Wolfram education experts: dynamic textbook, lesson plans, widgets, interactive Demonstrations, and more.	Wolfram Language » Knowledge-based programming for everyone.