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Integers m that belong to at least two distinct Lucas sequences U(P,Q) with P>0 different from m, |Q|=1, and (P,Q) different from (3,1).
1

%I #4 Nov 08 2012 22:07:12

%S 0,1,5,360,528,1189

%N Integers m that belong to at least two distinct Lucas sequences U(P,Q) with P>0 different from m, |Q|=1, and (P,Q) different from (3,1).

%C No other terms below 10^9.

%C (P,Q)=(3,1) is excluded since U(3,1) represents a bisection of U(1,-1)

%H Max A. Alekseyev, <a href="http://arxiv.org/abs/1002.1679">On the intersections of Fibonacci, Pell, and Lucas numbers</a>, INTEGERS 11(3) (2011), pp. 239-259. doi:<a href="http://dx.doi.org/10.1515/INTEG.2011.021">10.1515/INTEG.2011.021</a>

%e 5 belongs to U(1,-1) and U(2,-1)

%e 360 belongs to U(3,-1) and U(19,1)

%e 528 belongs to U(8,-1) and U(23,1)

%e 1189 belongs to U(3,-1) and U(6,1)

%Y Cf. A218995

%K nonn,more

%O 1,3

%A _Max Alekseyev_, Nov 08 2012