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 A054107 T(n,n-3), array T as in A054106. 0

%I #14 Apr 24 2020 18:45:46

%S 1,3,8,15,27,44,67,97,135,182,239,307,387,480,587,709,847,1002,1175,

%T 1367,1579,1812,2067,2345,2647,2974,3327,3707,4115,4552,5019,5517,

%U 6047,6610,7207,7839,8507,9212,9955,10737,11559

%N T(n,n-3), array T as in A054106.

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (4,-6,4,-1).

%F For n>5, a(n) = 1/6 * (n^3 - 6n^2 + 23n - 48).

%F G.f.: x^3*(1-x+x^2)*(1+x^2-2*x^3+x^4)/(1-x)^4. [_Colin Barker_, Sep 09 2012]

%t LinearRecurrence[{4,-6,4,-1},{1,3,8,15,27,44,67},50] (* _Harvey P. Dale_, Apr 24 2020 *)

%K nonn,easy

%O 3,2

%A _Clark Kimberling_

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Last modified December 11 02:45 EST 2023. Contains 367717 sequences. (Running on oeis4.)