Wolstenholme number

A Wolstenholme number is a number that is the numerator of the generalized harmonic number Hn,2.

Not to be confused with Wolstenholme prime.

The first such numbers are 1, 5, 49, 205, 5269, 5369, 266681, 1077749, … (sequence A007406 in the OEIS).

These numbers are named after Joseph Wolstenholme, who proved Wolstenholme's theorem on modular relations of the generalized harmonic numbers.

References
  • Weisstein, Eric W. "WolstenholmeNumber". MathWorld.



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