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 A187342 #9 Jul 05 2025 18:46:17
%S A187342 1,3,4,6,7,9,10,12,14,15,17,18,20,21,23,25,26,28,29,31,32,34,36,37,39,
%T A187342 40,42,43,45,47,48,50,51,53,54,56,57,59,61,62,64,65,67,68,70,72,73,75,
%U A187342 76,78,79,81,83,84,86,87,89,90,92,94,95,97,98,100,101,103,104,106,108,109,111,112,114,115,117,119,120,122,123,125
%N A187342 Floor(((15+sqrt(5))/11)n); complement of A187341.
%H A187342 Harvey P. Dale, <a href="/A187342/b187342.txt">Table of n, a(n) for n = 1..1000</a>
%F A187342 a(n)=floor(((15+sqrt(5))/11)n).
%t A187342 Table[Floor[((15+5^(1/2))/11)n], {n,1,80}]
%t A187342 With[{c=(15+Sqrt[5])/11},Floor[c*Range[80]]] (* _Harvey P. Dale_, Jul 05 2025 *)
%Y A187342 A187341.
%K A187342 nonn
%O A187342 1,2
%A A187342 _Clark Kimberling_, Mar 08 2011