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Suzanne Set


The nth Suzanne set S_n is defined as the set of composite numbers x for which n|S(x) and n|S_p(x), where n is a positive integer. Write x in decimal notation and as its prime factorization, with prime factors repeated according to their multiplicity, as

x=a_0+a_1(10^1)+...+a_d(10^d)
(1)
=p_1p_2...p_m,
(2)

and

S(x)=sum_(j=0)^(d)a_j
(3)
S_p(x)=sum_(i=1)^(m)S(p_i).
(4)

Every Suzanne set has an infinite number of elements (Smith 1996).

The following table gives the first few Suzanne numbers in S_n for small n.

nOEISS_n
1A0028084, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, ...
2A1022164, 8, 15, 22, 26, 35, 42, 44, 60, 62, 64, ...
3A1022179, 24, 27, 42, 60, 72, 78, 81, 105, 114, ...

The Suzanne set S_n is a subset of the Monica set M_n.


See also

Monica Set

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References

Sloane, N. J. A. Sequences A002808, A102216, and A102217 in "The On-Line Encyclopedia of Integer Sequences."Smith, M. "Cousins of Smith Numbers: Monica and Suzanne Sets." Fib. Quart. 34, 102-104, 1996.

Referenced on Wolfram|Alpha

Suzanne Set

Cite this as:

Weisstein, Eric W. "Suzanne Set." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/SuzanneSet.html

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