cp's OEIS Frontend

A075461 List of solutions to the Znám problem sorted first by length, then lexicographically.

%I A075461 #35 Feb 16 2025 08:32:47
%S A075461 2,3,7,47,395,2,3,11,23,31,2,3,7,43,1823,193667,2,3,7,47,403,19403,2,
%T A075461 3,7,47,415,8111,2,3,7,47,583,1223,2,3,7,55,179,24323,2,3,7,43,1807,
%U A075461 3263447,2130014000915,2,3,7,43,1807,3263591,71480133827,2,3,7,43
%N A075461 List of solutions to the Znám problem sorted first by length, then lexicographically.
%H A075461 Max Alekseyev, <a href="/A075461/b075461.txt">Table of n, a(n) for n = 1..934</a> (flattened list of the n-term solutions for n = 5..8)
%H A075461 J. Janák and L. Skula, <a href="http://dml.cz/dmlcz/133350">On the integers xi for which xi | x1 . . . xi-1 xi . . . xn + 1 holds</a>, Mathematica Slovaca, Vol. 28 (1978), No. 3, 305--310.
%H A075461 J. Sondow and K. MacMillan, <a href="http://www.jstor.org/stable/10.4169/amer.math.monthly.124.3.232">Primary pseudoperfect numbers, arithmetic progressions, and the Erdos-Moser equation</a>, Amer. Math. Monthly, 124 (2017) 232-240; <a href="http://arxiv.org/abs/1812.06566">arXiv:math/1812.06566 [math.NT]</a>, 2018.
%H A075461 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ZnamsProblem.html">Znám's Problem</a>
%H A075461 Wikipedia, <a href="https://en.wikipedia.org/wiki/Zn%C3%A1m%27s_problem">Znám's problem</a>.
%e A075461 Starts with A075441(5)=2 5-term solutions 2,3,7,47,395; 2,3,11,23,31, followed by A075441(6)=5 6-term solutions, etc.
%Y A075461 Cf. A006585, A007850, A054377, A075441, A085098, A118086, A158649, A164014, A343074, A369469.
%K A075461 nonn,tabf
%O A075461 1,1
%A A075461 _Eric W. Weisstein_, Sep 16 2002
%E A075461 Edited by _Max Alekseyev_, Jan 25 2024