OFFSET
1,2
COMMENTS
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
FORMULA
Conjecture: a(n) ~ (2/3)*n*sqrt((2/3)*n). - José María Grau Ribas, Feb 13 2024
MAPLE
A[1]:= 1:
for n from 1 to 100 do A[n+1] := A[n] + floor(A[n]^(1/3)) od:
seq(A[i], i=1..100); # Robert Israel, Jul 28 2019
MATHEMATICA
NestList[#+Floor[Surd[#, +3]]&, 1, 70] (* Harvey P. Dale, Jan 21 2013 *)
PROG
(Magma) [n le 1 select 1 else Self(n-1)+Floor(Self(n-1)^(1/3)): n in [1..75]]; // Vincenzo Librandi, Jul 29 2019
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Jonathan Vos Post, Jan 19 2006
EXTENSIONS
Corrected and extended by Harvey P. Dale, Jan 21 2013
STATUS
approved