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

A258593

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

Terms

    a(0) =1a(1) =8a(2) =46a(3) =208a(4) =805a(5) =2776a(6) =8742a(7) =25584a(8) =70450a(9) =184232a(10) =460832a(11) =1108848a(12) =2578295a(13) =5814992a(14) =12760598a(15) =27317056a(16) =57174768a(17) =117223008a(18) =235818894a(19) =466154416a(20) =906606234a(21) =1736736024a(22) =3280271526a(23) =6114139616a(24) =11255369609a(25) =20478505104a(26) =36849912318a(27) =65619691088

External references