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A179459
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Squares that are a sum of two Fibonacci numbers plus the square of a Fibonacci number.
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1
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4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 169, 225, 289, 441, 676, 729, 784, 1156, 1444, 1600, 2601, 3025, 4624, 7921, 12544, 20736, 23409, 27556, 31684, 47524, 54289, 139129, 142129, 171396, 217156, 372100, 974169, 1488400, 2550409, 6677056, 10201636
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OFFSET
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1,1
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COMMENTS
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The squares of A000045 (A007598) are basically a subsequence because they can be expressed as Fibonacci(k+3)^2 = Fibonacci(2k)+Fibonacci(2k+4)+Fibonacci(k-1)^2 or Fibonacci(k+2)^2 = Fibonacci(2k)+Fibonacci(2k+1)+Fibonacci(k)^2 or Fibonacci(2k+3)^2 = Fibonacci(4k)+Fibonacci(4k+4)+Fibonacci(2k-1)^2.
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LINKS
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EXAMPLE
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a(5)=36=6*6=3+8+25=Fib(4)+Fib(6)+Fib(5)^2.
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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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