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A329510 Expansion of (1 + x)*(1 + x + x^2)*(1 + x^2 - x^3) / (1 - x). 1

%I

%S 1,3,6,8,8,7,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,

%T 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,

%U 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6

%N Expansion of (1 + x)*(1 + x + x^2)*(1 + x^2 - x^3) / (1 - x).

%F a(n) = 6 for n >= 6.

%o (PARI) Vec((1 + x)*(1 + x + x^2)*(1 + x^2 - x^3) / (1 - x) + O(x^60)) \\ _Colin Barker_, Nov 23 2019

%Y Row 3 of array in A329508.

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_, Nov 22 2019

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Last modified April 9 17:48 EDT 2020. Contains 333361 sequences. (Running on oeis4.)