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 A130902 #11 Jul 19 2020 13:28:53
%S A130902 0,0,0,1,6,16,39,91,207,463,1014,2188,4671,9888,20786,43435,90302,
%T A130902 186934,385547,792642,1625035,3323393,6782041,13813588,28087444,
%U A130902 57023945,115614136,234117510,473564782,956961354,1932059363,3897575310,7856867785,15827584881
%N A130902 a(n) is the number of binary strings of length n such that there exist 4 or more ones in a subsequence of length 5 or less.
%H A130902 Matthew House, <a href="/A130902/b130902.txt">Table of n, a(n) for n = 0..3304</a>
%H A130902 <a href="/index/Rec#order_11">Index entries for linear recurrences with constant coefficients</a>, signature (3,-1,-2,1,0,-4,-1,2,0,-1,2).
%F A130902 a(n) = 2^n - A125513(n).
%F A130902 G.f.: x^3*(-1-3*x+x^2+x^3-x^4+x^5+x^6) / ( (2*x-1)*(x^10+x^7-2*x^5-x^4-x^2-x+1) ). - _R. J. Mathar_, Nov 28 2011
%t A130902 LinearRecurrence[{3,-1,-2,1,0,-4,-1,2,0,-1,2},{0,0,0,1,6,16,39,91,207,463,1014},40] (* _Harvey P. Dale_, Jul 19 2020 *)
%Y A130902 Cf. A118647, A118646.
%K A130902 nonn
%O A130902 0,5
%A A130902 _Tanya Khovanova_, Sep 28 2007
%E A130902 More terms from _Matthew House_, Dec 26 2016