OFFSET

1,1

PROG

(Python)

from fractions import Fraction

def A087709(n):

x = Fraction(n)

while x.denominator > 1 or x<=n:

x = Fraction(5*x.__ceil__(), 3)

return int(x)//5 # Chai Wah Wu, Sep 02 2023

CROSSREFS

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Sep 29 2003

STATUS

approved