login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Numbers of form x^2+40y^2 with positive x,y.
2

%I #2 Mar 30 2012 17:26:28

%S 41,44,49,56,65,76,89,104,121,140,161,164,169,176,184,185,196,209,224,

%T 236,241,260,265,281,296,304,329,356,361,364,369,376,385,396,401,409,

%U 416,424,440,441,449,460,481,484,504,521,524,529,556,560,569,585,601

%N Numbers of form x^2+40y^2 with positive x,y.

%K nonn

%O 1,1

%A _Zak Seidov_, Jan 23 2009