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A050118
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Numbers that are the product of two Lucas numbers.
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2
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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, 76, 77, 87, 94, 116, 121, 123, 126, 141, 152, 188, 198, 199, 203, 228, 246, 304, 319, 322, 324, 329, 369, 398, 492, 517, 521, 522, 532, 597
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internal format)
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OFFSET
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1,2
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LINKS
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MAPLE
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lucas:= t -> combinat:-fibonacci(t+1) + combinat:-fibonacci(t-1):
sort(convert(select(`<`, {seq(seq(lucas(i)*lucas(j), i=j..30), j=0..30)}, lucas(31)), list)); # Robert Israel, May 11 2016
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MATHEMATICA
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Take[Union[Flatten[Table[LucasL[i]*LucasL[j], {i, 0, 200}, {j, 1, 200}]]], 100] (* Clark Kimberling, May 11 2016 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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