OFFSET
0,3
LINKS
Karl V. Keller, Jr., Table of n, a(n) for n = 0..1000
FORMULA
a(n) = floor(sqrt(n^21)).
EXAMPLE
For n = 4, floor(sqrt(4^21)) = 2097152.
PROG
(Python)
from decimal import *
getcontext().prec = 100
for n in range(0, 1001): print int(Decimal(n**21).sqrt())
(PARI) a(n) = sqrtint(n^21) \\ Michel Marcus, Oct 01 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Karl V. Keller, Jr., Oct 01 2014
STATUS
approved