Zig Number

An Odd Alternating Permutation number, more commonly called an Euler Number or Secant Number.

• Euler-Poincaré Characteristic
• Euler Polyhedral Formula
• Euler Polynomial
• Euler Polynomial Identity
• Euler Power Conjecture
• Euler Product
• Euler Pseudoprime
• Euler Quartic Conjecture
• Euler's 6n+1 Theorem
• Euler's Addition Theorem
• Euler's Circle
• Euler's Conjecture
• Euler's Criterion
• Euler's Displacement Theorem
• Euler's Distribution Theorem
• Euler's Factorization Method
• Euler's Finite Difference Transformation
• Euler's Graeco-Roman Squares Conjecture
• Euler's Homogeneous Function Theorem
• Euler's Hypergeometric Transformations
• Euler's Idoneal Number
• Euler's Machin-Like Formula
• Euler's Pentagonal Number Theorem
• Euler's Phi Function
• Euler's Polygon Division Problem