Expansion of phi(-x) * phi(-x^9) / f(-x^6)^2 in powers of x where phi(), f() are Ramanujan theta functions.

A261202

Expansion of phi(-x) * phi(-x^9) / f(-x^6)^2 in powers of x where phi(), f() are Ramanujan theta functions.

Terms

    a(0) =1a(1) =-2a(2) =0a(3) =0a(4) =2a(5) =0a(6) =2a(7) =-4a(8) =0a(9) =-4a(10) =8a(11) =0a(12) =5a(13) =-14a(14) =0a(15) =-8a(16) =20a(17) =0a(18) =14a(19) =-28a(20) =0a(21) =-20a(22) =44a(23) =0a(24) =28a(25) =-66a(26) =0a(27) =-40a(28) =90a(29) =0

External references