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%I #19 Feb 26 2020 00:30:35
%S 1,-2,5,-29,265,-3191,47321,-832040,16908641,-389806471,10049731549,
%T -286482047279,8946795882025,-303762892305614,11140078609864049,
%U -438857301101610929,18482410314337295233,-828657053219851847135,39406519321199703822581,-1981132660316876165976260
%N L(n,-n), where L is defined as in A108299.
%C A108366(n) = L(n,n).
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Morgan-VoycePolynomials.html">Morgan-Voyce polynomials</a>
%F a(n) = (-1)^n * Product_{k=1..n} (n + 2*cos((2*k-1)*Pi/(2*n+1))) with Pi = 3.14...
%F a(n) = Sum_{k=0..n} (-1)^k*binomial(n+k,2*k)*(n+2)^k = b(n,-n-2), where b(n,x) are the Morgan-Voyce polynomials of A085478. - _Peter Bala_, May 01 2012
%o (PARI) a(n) = sum(k=0, n, (-1)^k*binomial(n+k,2*k)*(n+2)^k); \\ _Jinyuan Wang_, Feb 25 2020
%Y Cf. A000312, A085478, A108299, A108366.
%K sign
%O 0,2
%A _Reinhard Zumkeller_, Jun 01 2005
%E More terms from _Jinyuan Wang_, Feb 25 2020
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