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 A141364 #15 Jul 24 2025 05:11:27
%S A141364 1,0,1,4,13,41,131,428,1429,4861,16795,58785,208011,742899,2674439,
%T A141364 9694844,35357669,129644789,477638699,1767263189,6564120419,
%U A141364 24466267019,91482563639,343059613649,1289904147323,4861946401451,18367353072151
%N A141364 a(n) = C(n)-1+0^n where C(n) = A000108(n).
%C A141364 Hankel transform is A141365.
%H A141364 Murray Tannock, <a href="https://skemman.is/bitstream/1946/25589/1/msc-tannock-2016.pdf">Equivalence classes of mesh patterns with a dominating pattern</a>, MSc Thesis, Reykjavik Univ., May 2016.
%F A141364 G.f.: c(x)-x/(1-x) where c(x) is the g.f. of A000108
%t A141364 CoefficientList[Series[(1 - Sqrt[1 - 4*x]) / (2*x)-x/(1-x),{x,0,26}],x] (* _James C. McMahon_, Jul 23 2025 *)
%Y A141364 Cf. A000108, A001453 (essentially the same sequence), A141351.
%K A141364 easy,nonn
%O A141364 0,4
%A A141364 _Paul Barry_, Jun 27 2008