• Zeisel number
• Zeisel numbers

Zeisel number (suomeksi)

Määritelmät:

• A squarefree integer with at least three prime factors which fall into the pattern $p\_x\; =\; ap\_\{x\; -\; 1\}\; +\; b$, where ''a'' and ''b'' are some integer constants and ''x'' is the index number of each prime factor in the factorization, sorted from lowest to highest.