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a(0)=11; a(n) = a(n-1) + floor(sqrt(a(n-1))), n > 0.
0

%I #10 Sep 01 2018 15:33:50

%S 11,14,17,21,25,30,35,40,46,52,59,66,74,82,91,100,110,120,130,141,152,

%T 164,176,189,202,216,230,245,260,276,292,309,326,344,362,381,400,420,

%U 440,460,481,502,524,546,569

%N a(0)=11; a(n) = a(n-1) + floor(sqrt(a(n-1))), n > 0.

%C Row 2 in square array A159016.

%C This sequence contains an infinite number of squares. - _Philippe Deléham_, Apr 04 2009

%C The squares in this sequence are A020714(k)^2, k=0,1,2,.... - _Vincenzo Librandi_, Apr 20 2009 [clarified by _R. J. Mathar_, Dec 05 2010]

%Y Cf. A028392, A020714.

%K nonn

%O 0,1

%A _Philippe Deléham_, Apr 02 2009