A216577 - OEIS

%I #14 Aug 11 2015 16:05:19

%S 1,1,0,0,1,0,0,0,0,1,1,1,0,0,1,0,1,0,0,1,0,0,0,0,0,1,1,0,0,0,0,0,0,0,

%T 0,1,1,0,0,0,1,1,0,0,1,0,1,0,0,2,0,0,0,0,0,0,1,0,0,1,0,0,0,0,1,1,0,0,

%U 0,0,0,0,0,0,1,0,1,0,0,0,0,1,0,0,0,0,0,0,0,1,1,2,0,0,1,0,0,0,0,1

%N Number of nonnegative integer solutions to the equation x^2 + 10*y^2 = n.

%Y Cf. A020673, A033201.

%K nonn

%O 0,50

%A _V. Raman_, Sep 08 2012

%E Corrected by _T. D. Noe_ and _N. J. A. Sloane_, Sep 10 2012