OFFSET
0,3
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 0..10000
MATHEMATICA
Table[Ceiling[n/Sqrt[2]], {n, 0, 50}] (* G. C. Greubel, Jul 06 2017 *)
PROG
(Haskell)
a049474 = ceiling . (/ sqrt 2) . fromIntegral
-- Reinhard Zumkeller, Jul 01 2015
(PARI) a(n)=if(n, sqrtint((n^2-1)\2)+1, 0) \\ Charles R Greathouse IV, Sep 02 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved