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 A289973 #8 Aug 17 2017 05:45:12
%S A289973 1,4,11,33,96,280,818,2387,6970,20347,59401,173414,506261,1477968,
%T A289973 4314748,12596384,36773617,107356118,313413177,914971789,2671149257,
%U A289973 7798096555,22765597881,66461404174,194026015382,566435438933,1653639620681,4827600476829
%N A289973 p-INVERT of the lower Wythoff sequence (A000201), where p(S) = 1 - S.
%C A289973 Suppose s = (c(0), c(1), c(2), ...) is a sequence and p(S) is a polynomial. Let S(x) = c(0)*x + c(1)*x^2 + c(2)*x^3 + ... and T(x) = (-p(0) + 1/p(S(x)))/x. The p-INVERT of s is the sequence t(s) of coefficients in the Maclaurin series for T(x). Taking p(S) = 1 - S gives the "INVERT" transform of s, so that p-INVERT is a generalization of the "INVERT" transform (e.g., A033453).
%C A289973 See A289780 for a guide to related sequences.
%t A289973 z = 60; r = GoldenRatio; s = Sum[Floor[k*r] x^k, {k, 1, z}]; p = 1 - s;
%t A289973 Drop[CoefficientList[Series[s, {x, 0, z}], x], 1] (* A000201 *)
%t A289973 Drop[CoefficientList[Series[1/p, {x, 0, z}], x] , 1] (* A289973 *)
%Y A289973 Cf. A000201, A289974.
%K A289973 nonn,easy
%O A289973 0,2
%A A289973 _Clark Kimberling_, Aug 15 2017