Irregular triangle read by rows: coefficients of minimal polynomial of a certain algebraic number S2(2*k+1) from Q(2*cos(Pi/n)) related to the regular (2*k+1)-gon, k >= 1.

A228781

Irregular triangle read by rows: coefficients of minimal polynomial of a certain algebraic number S2(2*k+1) from Q(2*cos(Pi/n)) related to the regular (2*k+1)-gon, k >= 1.

Terms

    a(0) =-3a(1) =1a(2) =5a(3) =-10a(4) =1a(5) =-7a(6) =35a(7) =-21a(8) =1a(9) =-3a(10) =27a(11) =-33a(12) =1a(13) =-11a(14) =165a(15) =-462a(16) =330a(17) =-55a(18) =1a(19) =13a(20) =-286a(21) =1287a(22) =-1716a(23) =715a(24) =-78a(25) =1a(26) =1a(27) =-28a(28) =134a(29) =-92

External references