Expansion of phi(q) * phi(q^9) / phi(q^3)^2 in powers of q where phi() is a Ramanujan theta function.
A233673
Expansion of phi(q) * phi(q^9) / phi(q^3)^2 in powers of q where phi() is a Ramanujan theta function.
Terms
- a(0) =1a(1) =2a(2) =0a(3) =-4a(4) =-6a(5) =0a(6) =12a(7) =16a(8) =0a(9) =-28a(10) =-36a(11) =0a(12) =60a(13) =76a(14) =0a(15) =-120a(16) =-150a(17) =0a(18) =228a(19) =280a(20) =0a(21) =-416a(22) =-504a(23) =0a(24) =732a(25) =878a(26) =0a(27) =-1252a(28) =-1488a(29) =0
External references
- oeis: A233673