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A038129 Beatty sequence for cube root of 2. 3
0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, 20, 21, 22, 23, 25, 26, 27, 28, 30, 31, 32, 34, 35, 36, 37, 39, 40, 41, 42, 44, 45, 46, 47, 49, 50, 51, 52, 54, 55, 56, 57, 59, 60, 61, 62, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76, 78, 79, 80, 81, 83, 84, 85, 86, 88, 89 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
FORMULA
a(n)=floor(n*1.2599210498..)
a(n)=floor(n*2^(1/3)) - Benoit Cloitre, Apr 16 2003
MATHEMATICA
Floor[Range[0, 90]Surd[2, 3]] (* Harvey P. Dale, Mar 24 2019 *)
PROG
(PARI) a(n)=floor(n*2^(1/3))
(Python)
from sympy import integer_nthroot
def A038129(n): return integer_nthroot(2*n**3, 3)[0] # Chai Wah Wu, Mar 17 2021
CROSSREFS
Cf. A059539.
Sequence in context: A001068 A039145 A242491 * A062071 A087069 A023737
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Benoit Cloitre, Apr 16 2003
STATUS
approved

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)