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A004972
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a(n) = ceiling(n*phi^17), where phi is the golden ratio, A001622.
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1
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0, 3572, 7143, 10714, 14285, 17856, 21427, 24998, 28569, 32140, 35711, 39282, 42853, 46424, 49995, 53566, 57137, 60708, 64279, 67850, 71421, 74992, 78563, 82134, 85705, 89276, 92847, 96418, 99989, 103560, 107131, 110702, 114273, 117844, 121415, 124986
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) = 3571*n + 1 for n > 0.
a(n) = 2*a(n-1) - a(n-2) for n > 2.
G.f.: -x*(x-3572) / (x-1)^2.
(End)
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PROG
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(PARI) concat(0, Vec(-x*(x-3572)/(x-1)^2 + O(x^100))) \\ Colin Barker, Dec 22 2014
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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