Expansion of q * (psi(q^3)^3 / psi(q)) / (phi(-q)^3 / phi(-q^3)) in powers of q where phi(), psi() are Ramanujan theta functions.

A128638

Expansion of q * (psi(q^3)^3 / psi(q)) / (phi(-q)^3 / phi(-q^3)) in powers of q where phi(), psi() are Ramanujan theta functions.

Terms

    a(0) =1a(1) =5a(2) =19a(3) =61a(4) =174a(5) =455a(6) =1112a(7) =2573a(8) =5689a(9) =12102a(10) =24900a(11) =49759a(12) =96902a(13) =184408a(14) =343722a(15) =628717a(16) =1130418a(17) =2000669a(18) =3489788a(19) =6005910a(20) =10207688a(21) =17147892a(22) =28494120a(23) =46865519a(24) =76342903a(25) =123236446a(26) =197233723a(27) =313106264a(28) =493231830a(29) =771301986

External references