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A255270
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Integer part of fourth root of n.
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6
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0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3
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OFFSET
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0,17
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COMMENTS
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n appears (n+1)^4 - n^4 times (A005917).
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LINKS
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FORMULA
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a(n) = floor(n^(1/4)) = floor(sqrt(A000196(n))).
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MAPLE
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floor( n^(1/4)) ;
end proc:
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MATHEMATICA
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Floor[Range[0, 100]^(1/4)]
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PROG
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(PARI) vector(100, n, n--; floor(n^(1/4)))
(Sage) [floor(n^(1/4)) for n in (0..100)]
(Magma) [IsZero(n) select 0 else Iroot(n, 4): n in [0..100]];
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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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STATUS
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approved
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