Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #6 Sep 11 2012 11:10:41
%S 1,4,9,16,25,36,49,64,81,100,121,144,169,193,196,225,256,289,324,337,
%T 361,400,441,457,484,529,576,625,673,676,729,772,784,841,900,961,1009,
%U 1024,1033,1089,1129,1156,1201,1225,1296,1297,1348,1369,1444,1521,1600,1681,1737,1764,1801,1828,1849,1873,1936,2017
%N Numbers which are simultaneously of the form x^2+y^2, x^2+2y^2, x^2+3y^2, x^2+7y^2, all with x>=0, y>=0.
%Y Union of A216451 and the squares (A000290).
%K nonn
%O 1,2
%A _V. Raman_, Sep 07 2012
%E Edited by _N. J. A. Sloane_, Sep 11 2012