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On the number of nonzero digits of the partition function

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Abstract

Let p(n) be the function that counts the number of partitions of n. Let b ≥ 2 be a fixed positive integer. In this paper, we show that for almost all n the sum of the digits of p(n) in base b is at least log n/(7log log n). Our proof uses the first term of Rademacher’s formula for p(n).

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References

  1. George E. Andrews, The Theory of Partitions, 1976, Cambridge University Press.

  2. Luca F.: Distinct digits in base b expansions of linear recurrence sequences. Quaest. Math. 23, 389–404 (2000)

    Article  MathSciNet  MATH  Google Scholar 

  3. Luca F.: The number of non-zero digits of n!. Canadian Math. Bull. 45, 115–118 (2002)

    Article  MATH  Google Scholar 

  4. Luca F., Shparlinski I.E.: On the g-ary expansions of middle binomial coefficients and Catalan numbers. Rocky Mtn. J. Math. 41, 1291–1302 (2011)

    Article  MathSciNet  MATH  Google Scholar 

  5. Luca F., Shparlinski I.E.: On the g-ary expansions of Apéry, Motzkin and Schröder numbers. Annals of Combinatorics 14, 507–524 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  6. Stewart C.L.: On the representation of an integer in two different bases. J. Reine Angew. Math. 319, 63–72 (1980)

    Article  MathSciNet  MATH  Google Scholar 

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Correspondence to Florian Luca.

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This paper was written while the author was in sabbatical from the Mathematical Institute UNAM from January 1 to June 30, 2011 and supported by a PASPA fellowship from DGAPA.

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Luca, F. On the number of nonzero digits of the partition function. Arch. Math. 98, 235–240 (2012). https://doi.org/10.1007/s00013-011-0350-2

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  • DOI: https://doi.org/10.1007/s00013-011-0350-2

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