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A104908
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a(n) = floor(sqrt(a(n-1)^2 + a(n-2)^2)), a(1)=100, a(2)=300.
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3
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100, 300, 316, 435, 537, 691, 875, 1114, 1416, 1801, 2290, 2913, 3705, 4713, 5994, 7624, 9698, 12335, 15690, 19958, 25386, 32291, 41075, 52248, 66460, 84538, 107534, 136785, 173993, 221322, 281526, 358106
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = floor(sqrt(a(n-1)^2 + a(n-2)^2)) with a(1) = 100, a(2) = 300.
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MATHEMATICA
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a[n_]:= a[n]= If[n<3, 100*(2*n-1), Floor[Sqrt[a[n-1]^2 + a[n-2]^2]] ];
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PROG
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(Magma)
A104908:= func< n| n lt 3 select 100*(2*n-1) else Floor(Sqrt(Self(n-1)^2 +Self(n-2)^2)) >;
(Sage)
@CachedFunction
def a(n): return 100*(2*n-1) if (n<3) else floor(sqrt(a(n-1)^2 + a(n-2)^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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