OFFSET
1,2
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = A001951(n)^2 = floor(n*sqrt(2))^2.
EXAMPLE
a(10) = 196 because 196 is the largest square less than 2*10^2 = 200.
MATHEMATICA
Table[Floor[Sqrt[2n^2-1]], {n, 100}]^2 (* Harvey P. Dale, Mar 26 2011 *)
PROG
(PARI) a(n) = sqrtint(2*n^2)^2; \\ Michel Marcus, Jul 08 2020
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jens Voß, Aug 07 2003
STATUS
approved