%I A028392
%S A028392 0,2,3,4,6,7,8,9,10,12,13,14,15,16,17,18,20,21,22,23,24,25,26,27,28,30,
%T A028392 31,32,33,34,35,36,37,38,39,40,42,43,44,45,46,47,48,49,50,51,52,53,54,
%U A028392 56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,72,73,74,75,76,77,78,79
%N A028392 n+[ sqrt(n) ].
%D A028392 Problem B4 in L. F. Klosinski, G. L. Alexanderson and A. P. Hillman, 
               The William Lowell Putnam Mathematical Competition, Amer. Math. Monthly 
               91 (1984), 487-495.
%o A028392 (PARI) a(n)=if(n<0,0,n+sqrtint(n))
%Y A028392 Complement of A028387.
%Y A028392 Sequence in context: A014155 A166527 A039223 this_sequence A047226 A059537 
               A039259
%Y A028392 Adjacent sequences: A028389 A028390 A028391 this_sequence A028393 A028394 
               A028395
%K A028392 nonn
%O A028392 0,2
%A A028392 N. J. A. Sloane (njas(AT)research.att.com).