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A202452
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Lower triangular Fibonacci matrix, by SW antidiagonals.
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4
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1, 1, 0, 2, 1, 0, 3, 1, 0, 0, 5, 2, 1, 0, 0, 8, 3, 1, 0, 0, 0, 13, 5, 2, 1, 0, 0, 0, 21, 8, 3, 1, 0, 0, 0, 0, 34, 13, 5, 2, 1, 0, 0, 0, 0, 55, 21, 8, 3, 1, 0, 0, 0, 0, 0, 89, 34, 13, 5, 2, 1, 0, 0, 0, 0, 0, 144, 55, 21, 8, 3, 1, 0, 0, 0, 0, 0, 0
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OFFSET
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1,4
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LINKS
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FORMULA
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Column n consists of n-1 zeros followed by the Fibonacci sequence (1,1,2,3,5,8,...).
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EXAMPLE
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Northwest corner:
1...0...0...0...0...0...0...0...0
1...1...0...0...0...0...0...0...0
2...1...1...0...0...0...0...0...0
3...2...1...1...0...0...0...0...0
5...3...2...1...1...0...0...0...0
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MATHEMATICA
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n = 12;
Q = NestList[Most[Prepend[#, 0]] &, #, Length[#] - 1] &[Table[Fibonacci[k], {k, 1, n}]];
P = Transpose[Q]; F = P.Q;
Flatten[Table[P[[i]][[k + 1 - i]], {k, 1, n}, {i, 1, k}]] (* A202451 as a sequence *)
Flatten[Table[Q[[i]][[k + 1 - i]], {k, 1, n}, {i, 1, k}]] (* A202452 as a sequence *)
Flatten[Table[F[[i]][[k + 1 - i]], {k, 1, n}, {i, 1, k}]] (* A202453 as a sequence *)
TableForm[Q] (* A202451, upper triangular Fibonacci array *)
TableForm[P] (* A202452, lower triangular Fibonacci array *)
TableForm[F] (* A202453, Fibonacci self-fusion matrix *)
TableForm[FactorInteger[F]]
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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