This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A159018 #17 Nov 26 2020 19:25:19 %S A159018 5,7,9,12,15,18,22,26,31,36,42,48,54,61,68,76,84,93,102,112,122,133, %T A159018 144,156,168,180,193,206,220,234,249,264,280,296,313,330,348,366,385, %U A159018 404,424,444,465,486,508,530,553,576,600,624,648,673,698,724,750,777,804,832,860,889,918,948,978 %N A159018 a(0)=5; a(n) = a(n-1) + floor(sqrt(a(n-1))), n > 0. %C A159018 Row 1 in square array A159016. %C A159018 This sequence contains an infinity of squares. - _Philippe Deléham_, Apr 04 2009 %C A159018 Intersection of the sequence with A000290 generates A002063. - _Vincenzo Librandi_, Apr 10 2009, clarified by _R. J. Mathar_, Dec 03 2010 %H A159018 Robert Israel, <a href="/A159018/b159018.txt">Table of n, a(n) for n = 0..10000</a> %p A159018 A:= Array(0..100): %p A159018 A[0]:= 5: %p A159018 for n from 1 to 100 do A[n]:= A[n-1]+floor(sqrt(A[n-1])) od: %p A159018 convert(A,list); # _Robert Israel_, Nov 26 2020 %Y A159018 Cf. A028392. %K A159018 nonn %O A159018 0,1 %A A159018 _Philippe Deléham_, Apr 02 2009