OFFSET
1,2
LINKS
David Wasserman, Table of n, a(n) for n = 1..160
Eric Weisstein's World of Mathematics, Gauss's Circle Problem.
PROG
(PARI) A000328(n) = local(x, y, c, nn); c = 0; x = 0; nn = n*n; y = n; while (x < y, c += x; y--; x = sqrtint(nn - y*y)); 4*(n - y) + 8*c + (2*y + 1)^2; for (n = 1, 100000, if (A000328(n) > Pi*n*n, print(n))); \\ David Wasserman, Dec 05 2006
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Apr 17 2004
EXTENSIONS
Corrected and extended by David Wasserman, Dec 05 2006
Name corrected by Luis Mendo, Sep 24 2023
STATUS
approved