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The n-th row polynomial R(n,x) equals the n-th degree Taylor polynomial of the function (1 - x^2)*(1 + x + x^2)^n expanded about the point x = 0. - Peter Bala, Feb 26 2023
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[0] 1;
[1] 1 , 1;
[2] 1 , 2, 2;
[3] 1 , 3, 5, 4;
[4] 1 , 4, 9, 12, 9;
[5] 1 , 5, 14, 25, 30, 21;
[6] 1, 6, 20, 44, 69, 76, 51;
...
[7] 1, 7, 27, 70, 133, 189, 196, 127;
[8] 1, 8, 35, 104, 230, 392, 518, 512, 323;
[9] 1, 9, 44, 147, 369, 726, 1140, 1422, 1353, 835.
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M. János Uray, <a href="https://urayjanos.web.elte.hu/pub/expol-family.pdf">A family of barely expansive polynomials</a>, Eötvös Loránd University (Budapest, Hungary, 2020).
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