Expansion of (f(q) * f(q^3) / (f(-q) * f(-q^3)))^2 in powers of q where f() is a Ramanujan theta function.

A123861

Expansion of (f(q) * f(q^3) / (f(-q) * f(-q^3)))^2 in powers of q where f() is a Ramanujan theta function.

Terms

    a(0) =1a(1) =4a(2) =8a(3) =20a(4) =48a(5) =88a(6) =168a(7) =320a(8) =544a(9) =932a(10) =1584a(11) =2544a(12) =4080a(13) =6488a(14) =9984a(15) =15288a(16) =23232a(17) =34568a(18) =51144a(19) =75152a(20) =108832a(21) =156736a(22) =224352a(23) =317728a(24) =447648a(25) =627292a(26) =871856a(27) =1206068a(28) =1660416a(29) =2271032

External references