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Search: id:A060442
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| A060442 |
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Triangle T(n,k), n >= 0, in which n-th row (for n >= 3) lists prime factors of Fibonacci(n) (see A000045), without repetition. |
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+0
2
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| 0, 1, 1, 2, 3, 5, 2, 13, 3, 7, 2, 17, 5, 11, 89, 2, 3, 233, 13, 29, 2, 5, 61, 3, 7, 47, 1597, 2, 17, 19, 37, 113, 3, 5, 11, 41, 2, 13, 421, 89, 199, 28657, 2, 3, 7, 23, 5, 3001, 233, 521, 2, 17, 53, 109, 3, 13, 29, 281, 514229, 2, 5, 11, 31, 61, 557, 2417, 3, 7, 47, 2207, 2, 89
(list; graph; listen)
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OFFSET
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0,4
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COMMENT
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Rows have irregular lengths.
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LINKS
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T. D. Noe, Rows n=0..1000 of triangle, flattened (using Blair Kelly's data)
Blair Kelly, Fibonacci and Lucas Factorizations
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EXAMPLE
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0; 1; 1; 2; 3; 5; 2; 13; 3,7; 2,17; ...
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MAPLE
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with(numtheory): with(combinat): for i from 3 to 50 do for j from 1 to nops(ifactors(fibonacci(i))[2]) do printf(`%d, `, ifactors(fibonacci(i))[2][j][1]) od: od:
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CROSSREFS
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A000045, A060441.
For n>2, the length of row n is A022307(n).
Sequence in context: A102867 A139044 A060383 this_sequence A060385 A080648 A113195
Adjacent sequences: A060439 A060440 A060441 this_sequence A060443 A060444 A060445
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KEYWORD
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nonn,tabf,easy
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AUTHOR
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njas, Apr 07 2001
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Apr 09 2001
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