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A109249 Expansion of x*(-1+2*x-x^2+7*x^3+8*x^4-7*x^5+8*x^6) / ((4*x^3-x^2+3*x-1)*(2*x^4-2*x^3+3*x^2+1)*(x-1)^2). 1

%I #11 Mar 13 2024 21:52:04

%S 0,1,3,5,11,25,63,203,627,1855,5745,17975,55377,170873,529837,1640141,

%T 5071723,15696101,48582587,150328439,465178711,1439575547,4454855557,

%U 13785596531,42660346149,132015104853,408526817793,1264206449353

%N Expansion of x*(-1+2*x-x^2+7*x^3+8*x^4-7*x^5+8*x^6) / ((4*x^3-x^2+3*x-1)*(2*x^4-2*x^3+3*x^2+1)*(x-1)^2).

%C Floretion Algebra Multiplication Program, FAMP Code: 1kbasecycsumseq[ + .5'i + .5i' + j' + k' + 'ii'], sumtype: (Y[15], *, vesy)

%H Colin Barker, <a href="/A109249/b109249.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (5,-11,26,-45,57,-61,48,-26,8).

%F a(n) = 5*a(n-1) - 11*a(n-2) + 26*a(n-3) - 45*a(n-4) + 57*a(n-5) - 61*a(n-6) + 48*a(n-7) - 26*a(n-8) + 8*a(n-9) for n>8. - _Colin Barker_, May 13 2019

%t LinearRecurrence[{5,-11,26,-45,57,-61,48,-26,8},{0,1,3,5,11,25,63,203,627},40] (* _Harvey P. Dale_, May 26 2019 *)

%o (PARI) concat(0, Vec(x*(1 - 2*x + x^2 - 7*x^3 - 8*x^4 + 7*x^5 - 8*x^6) / ((1 - x)^2*(1 - 3*x + x^2 - 4*x^3)*(1 + 3*x^2 - 2*x^3 + 2*x^4)) + O(x^30))) \\ _Colin Barker_, May 13 2019

%K nonn

%O 0,3

%A _Creighton Dement_, Aug 19 2005

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Last modified April 24 08:28 EDT 2024. Contains 371927 sequences. (Running on oeis4.)