Irregular triangle read by rows: coefficients of minimal polynomial of a certain algebraic number S2(2*k) from Q(2*cos(Pi/(2*k))) related to the regular (2*k)-gon.

A228782

Irregular triangle read by rows: coefficients of minimal polynomial of a certain algebraic number S2(2*k) from Q(2*cos(Pi/(2*k))) related to the regular (2*k)-gon.

Terms

    a(0) =-4a(1) =1a(2) =4a(3) =-12a(4) =1a(5) =36a(6) =-24a(7) =1a(8) =16a(9) =-96a(10) =136a(11) =-40a(12) =1a(13) =16a(14) =-96a(15) =136a(16) =-56a(17) =1a(18) =16a(19) =-320a(20) =456a(21) =-80a(22) =1a(23) =3136a(24) =-12544a(25) =14896a(26) =-7168a(27) =1484a(28) =-112a(29) =1

External references