cp's OEIS Frontend

A299707 Numbers m such that m^2 + 1 can be expressed in more than one way as j^2 + k^2 with j > k > 1.

%I A299707 #13 Mar 14 2021 14:25:21
%S A299707 18,32,38,43,47,57,68,70,72,73,82,83,93,98,99,107,112,117,118,122,123,
%T A299707 128,132,133,138,142,143,148,157,162,168,172,173,174,177,182,183,187,
%U A299707 191,192,193,200,203,207,208,212,213,216,217,218,228,232,233,237,242,243,251,252
%N A299707 Numbers m such that m^2 + 1 can be expressed in more than one way as j^2 + k^2 with j > k > 1.
%H A299707 Hugo Pfoertner, <a href="/A299707/b299707.txt">Table of n, a(n) for n = 1..10000</a>
%e A299707 a(1) = 18: 18^2 + 1 = 325 = 17^2 + 6^2 = 15^2 + 10^2,
%e A299707 a(2) = 32: 32^2 + 1 = 1025 = 31^2 + 8^2 = 25^2 + 20^2,
%e A299707 a(5) = 47: 47^2 + 1 = 2210 = 43^2 + 19^2 = 41^2 + 23^2 = 37^2 + 29^2.
%Y A299707 Cf. A050796, A299708, A300161, A300162, A300163, A300164, A300165, A300166.
%K A299707 nonn
%O A299707 1,1
%A A299707 _Hugo Pfoertner_, Feb 27 2018