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A139179 Number of non-fourth-powers <= n. +0
1
0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70 (list; graph; listen)
OFFSET

1,4

FORMULA

a(n) = n - floor[n^(1/4)].

CROSSREFS

Cf. A028391, A064524.

Sequence in context: A072965 A043274 A124196 this_sequence A130909 A160700 A002377

Adjacent sequences: A139176 A139177 A139178 this_sequence A139180 A139181 A139182

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), Jun 06 2008

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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