OFFSET
1,1
MAPLE
lprint(round(evalf(10000000*sqrt(n))));
PROG
(Python)
from math import isqrt
def A027664(n): return (m:=isqrt(k:=n*10**14))+int(k-m*(m+1)>=1) # Chai Wah Wu, Jul 31 2022
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved