Expansion of chi(q) * chi(-q^9) / (chi(-q) * chi(q^9)) in powers of q where chi() is a Ramanujan theta function.
A261156
Expansion of chi(q) * chi(-q^9) / (chi(-q) * chi(q^9)) in powers of q where chi() is a Ramanujan theta function.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =6a(5) =8a(6) =12a(7) =16a(8) =22a(9) =28a(10) =36a(11) =48a(12) =60a(13) =76a(14) =96a(15) =120a(16) =150a(17) =184a(18) =228a(19) =280a(20) =340a(21) =416a(22) =504a(23) =608a(24) =732a(25) =878a(26) =1052a(27) =1252a(28) =1488a(29) =1768
External references
- oeis: A261156