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 A158037 #5 Aug 02 2021 17:49:52
%S A158037 1,2,3,4,5,6,7,8,10,11,12,13,14,15,17,18,19,20,21,22,23,24,26,27,28,
%T A158037 29,30,31,32,33,34,35,37,38,39,40,41,42,43,44,45,46,47,48,50,51,52,53,
%U A158037 54,55,56,57,58,59,60,61,62,63,65,66,67,68,69,70,71,72,73,74,75,76,77,78
%N A158037 A106044 sorted and duplicates removed.
%C A158037 All natural numbers except squares, 3^2=9, 4^2=16, 5^2=25, 6^2=36, 7^2=49, 8^2=64, ... are missing from the current sequence.
%t A158037 lst={};Do[p=Prime[n];s=p^(1/2);f=Floor[s];a=(f+1)^2;d=a-p;AppendTo[lst,d],{n,7!}];Take[Union[lst],5! ]
%t A158037 (Floor[Sqrt[#]]+1)^2-#&/@Prime[Range[500]]//Union (* _Harvey P. Dale_, Aug 02 2021 *)
%Y A158037 Cf. A106044, A104492, A056892
%K A158037 nonn
%O A158037 1,2
%A A158037 _Vladimir Joseph Stephan Orlovsky_, Mar 11 2009