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A076969 a(1) = 1, a(n+1)= smallest cube greater than the n-th partial sum. 1
1, 8, 27, 64, 125, 343, 729, 1331, 2744, 5832, 12167, 24389, 50653, 103823, 205379, 421875, 830584, 1685159, 3375000, 6751269, 13481272, 27000000, 54010152, 108531333, 217081801, 433798093, 868250664, 1736654408, 3477265875 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..29.

MAPLE

a[1] := 1:a[2] := 8:for n from 3 to 145 do a[n] := ceil(evalf((sum(a[i], i=1..n-1)+1/10^19)^(1/3), 100))^3; od:seq(a[k], k=1..145);

MATHEMATICA

Module[{c={1}}, Do[AppendTo[c, Ceiling[Surd[Total[c], 3]]^3], {30}]; c] (* Harvey P. Dale, Jan 21 2013 *)

CROSSREFS

Cf. A076970.

Sequence in context: A030289 A111131 A111103 * A179163 A050462 A112662

Adjacent sequences:  A076966 A076967 A076968 * A076970 A076971 A076972

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Oct 21 2002

EXTENSIONS

More terms from Sascha Kurz, Jan 22 2003

STATUS

approved

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Last modified April 18 15:54 EDT 2021. Contains 343089 sequences. (Running on oeis4.)