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A328980 Erroneous version of A328910: Number of solutions to Erdős's Last Equation in n variables. 3
3, 7, 8, 8, 17, 14, 18 (list; graph; refs; listen; history; text; internal format)



The equation is x_1*x_2*...*x_n = n*(x_1+...+x_n) (n >= 2).

These are the terms are given as f(n) in a table on p. 803 in the cited paper. However, the sets C_L(n) of solutions with L+1 components > 1 can't be nonempty for L = n, as listed there for n = 2 and n = 3. The author (pers. comm.) confirms that a(2) = 2, a(3) = 6 and a(8) = 19. Sequence A328910 gives the correct terms. - M. F. Hasler, Nov 07 2019

Included in accordance with OEIS policy of including published but erroneous sequences to serve as pointers to the correct values.


Table of n, a(n) for n=2..8.

Peter Shiu, On Erdős's Last Equation, Amer. Math. Monthly, 126 (2019), 802-808; correction, 127:5 (2020), 478.


Cf. A328910, A328911.

Sequence in context: A011398 A317850 A181828 * A059101 A091679 A116034

Adjacent sequences:  A328977 A328978 A328979 * A328981 A328982 A328983




N. J. A. Sloane, Jun 04 2020



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Last modified December 4 12:45 EST 2020. Contains 338923 sequences. (Running on oeis4.)