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A050118 Numbers that are the product of two Lucas numbers. 2

%I

%S 1,2,3,4,6,7,8,9,11,12,14,16,18,21,22,28,29,33,36,44,47,49,54,58,72,

%T 76,77,87,94,116,121,123,126,141,152,188,198,199,203,228,246,304,319,

%U 322,324,329,369,398,492,517,521,522,532,597

%N Numbers that are the product of two Lucas numbers.

%H Robert Israel, <a href="/A050118/b050118.txt">Table of n, a(n) for n = 1..10000</a>

%p lucas:= t -> combinat:-fibonacci(t+1) + combinat:-fibonacci(t-1):

%p sort(convert(select(`<`,{seq(seq(lucas(i)*lucas(j),i=j..30),j=0..30)},lucas(31)),list)); # _Robert Israel_, May 11 2016

%t Take[Union[Flatten[Table[LucasL[i]*LucasL[j], {i, 0, 200}, {j, 1, 200}]]], 100] (* _Clark Kimberling_, May 11 2016 *)

%Y Cf. A000032.

%K nonn

%O 1,2

%A _Clark Kimberling_

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Last modified October 4 21:22 EDT 2022. Contains 357240 sequences. (Running on oeis4.)