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A032520 Sum of the integer part of 13/3-th roots of integers less than n. 4
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..68.

MATHEMATICA

Accumulate[Table[Floor[Surd[n^3, 13]], {n, 0, 70}]] (* Harvey P. Dale, May 03 2015 *)

CROSSREFS

Sequence in context: A138234 A324720 A247756 * A034837 A096105 A178157

Adjacent sequences:  A032517 A032518 A032519 * A032521 A032522 A032523

KEYWORD

nonn

AUTHOR

Michel Tixier (tixier(AT)dyadel.net)

STATUS

approved

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Last modified October 21 16:25 EDT 2019. Contains 328302 sequences. (Running on oeis4.)