OFFSET
0,5
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..10000
FORMULA
a(n) = [1/s]+[2/s]+...+[n/s], where s=2+sqrt(2) and []=floor.
MATHEMATICA
Accumulate[Floor[Range[60]/(2+Sqrt[2])]] (* Harvey P. Dale, Oct 20 2017 *)
PROG
(PARI) default(realprecision, 100); s=2+sqrt(2); for(n=1, 99, print1(sum(k=1, n, floor(k/s)), ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 26 2010
STATUS
approved