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 A184813 #10 Jul 01 2017 02:55:15 %S A184813 2,5,8,12,15,17,21,24,27,30,33,36,39,43,46,49,51,55,58,61,65,67,70,73, %T A184813 77,80,83,86,89,92,96,99,101,104,108,111,114,118,120,123,126,130,133, %U A184813 135,139,142,145,148,152,154,157,161,164,167,170,173,176,179,183,185,188,192,195,198 %N A184813 n+[nr/s]+[nt/s], where r=sqrt(2), s=sqrt(3), t=sqrt(5), and []=floor. %C A184813 See A184812. %H A184813 G. C. Greubel, <a href="/A184813/b184813.txt">Table of n, a(n) for n = 1..10000</a> %t A184813 (See A184812.) %o A184813 (PARI) a(n) = n + floor(n*sqrt(2/3)) + floor(n*sqrt(5/3)); \\ _Michel Marcus_, Jul 01 2017 %Y A184813 Cf. A184812, A184814. %K A184813 nonn %O A184813 1,1 %A A184813 _Clark Kimberling_, Jan 22 2011