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a(0)=55; a(n) = a(n-1) + floor(sqrt(a(n-1))), n > 0.
0

%I #11 Nov 27 2022 15:50:15

%S 55,62,69,77,85,94,103,113,123,134,145,157,169,182,195,208,222,236,

%T 251,266,282,298,315,332,350,368,387,406,426,446,467,488,510,532,555,

%U 578,602,626,651,676,702,728,754,781,808,836,864,893,922,952,982,1013,1044

%N a(0)=55; a(n) = a(n-1) + floor(sqrt(a(n-1))), n > 0.

%C Row 6 in square array A159016.

%C This sequence contains infinitely many squares. - _Philippe Deléham_, Apr 04 2009

%t NestList[#+Floor[Sqrt[#]]&,55,60] (* _Harvey P. Dale_, Nov 27 2022 *)

%Y Cf. A028392, A005029.

%K nonn

%O 0,1

%A _Philippe Deléham_, Apr 02 2009

%E More terms from _Vincenzo Librandi_, Apr 10 2009