Theta series of D_4 lattice; Fourier coefficients of Eisenstein series E_{gamma,2}.

Terms

a(0) =1a(1) =24a(2) =24a(3) =96a(4) =24a(5) =144a(6) =96a(7) =192a(8) =24a(9) =312a(10) =144a(11) =288a(12) =96a(13) =336a(14) =192a(15) =576a(16) =24a(17) =432a(18) =312a(19) =480a(20) =144a(21) =768a(22) =288a(23) =576a(24) =96a(25) =744a(26) =336a(27) =960a(28) =192a(29) =720