Expansion of psi(-x) * psi(-x^3) / (phi(x^2) * phi(x^6)) in powers of x where phi(), psi() are Ramanujan theta functions.

A281731

Expansion of psi(-x) * psi(-x^3) / (phi(x^2) * phi(x^6)) in powers of x where phi(), psi() are Ramanujan theta functions.

Terms

    a(0) =1a(1) =-1a(2) =-2a(3) =0a(4) =5a(5) =0a(6) =-10a(7) =2a(8) =18a(9) =0a(10) =-32a(11) =0a(12) =55a(13) =-5a(14) =-90a(15) =0a(16) =144a(17) =0a(18) =-226a(19) =10a(20) =346a(21) =0a(22) =-522a(23) =0a(24) =777a(25) =-18a(26) =-1138a(27) =0a(28) =1648a(29) =0

External references