Sequence needed for the nonpositive powers of rho(11) = 2*cos(Pi/11) in the power basis of the degree 5 number field Q(rho(11)). Negative of the coefficients of the second power.

A230081

Sequence needed for the nonpositive powers of rho(11) = 2*cos(Pi/11) in the power basis of the degree 5 number field Q(rho(11)). Negative of the coefficients of the second power.

Terms

    a(0) =0a(1) =4a(2) =13a(3) =50a(4) =173a(5) =613a(6) =2149a(7) =7557a(8) =26543a(9) =93264a(10) =327657a(11) =1151183a(12) =4044478a(13) =14209634a(14) =49923211a(15) =175397097a(16) =616229093a(17) =2165020570a(18) =7606447024a(19) =26724012524a(20) =93890464368a(21) =329868851103

External references