Euler Zigzag Calculator

sec(x)+tan(x) coefficients

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About Euler Zigzag Calculator

An Euler zigzag number calculator computing E_n: 1,1,1,2,5,16,61,272,1385,7936... Counts alternating permutations of {1,...,n}. E_n = n! · [x^n] (sec(x)+tan(x)). Even: secant numbers. Odd: tangent numbers. Client-side.

Euler Zigzag Calculator Features

  • E_n value
  • Sequence
  • sec/tan link
  • Alternating perms
  • Growth rate

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