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Search: id:A124925
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| A124925 |
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In subsets of 3 terms, 2-nd degree polys solving for (n + phi). |
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+0
1
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| 1, 3, 1, 1, 5, 5, 1, 7, 11, 1, 9, 19, 1, 11, 29, 1, 13, 41, 1, 15, 55, 1, 17, 71, 1, 19, 89
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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Subsets of 3 terms: (1, (2n+1), A028387(n+1)), where A028387 = (1, 5, 11, 19, 29, 41...).
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EXAMPLE
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Using alternate signs, (x^2 - 3x + 1) solves for 1 + 1.6180339...; x^2 - 5x + 5 solves for 2 + phi...; generally, n-th subset solves for n + phi as a root to a 2-nd degree polynomial.
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CROSSREFS
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Sequence in context: A125690 A108553 A158418 this_sequence A073145 A145033 A076756
Adjacent sequences: A124922 A124923 A124924 this_sequence A124926 A124927 A124928
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KEYWORD
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nonn,uned
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 12 2006
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