Expansion of Product_{m>=1} (1+q^m)^28.

Terms

a(0) =1a(1) =28a(2) =406a(3) =4088a(4) =32249a(5) =212772a(6) =1222438a(7) =6283400a(8) =29454432a(9) =127721972a(10) =517920340a(11) =1980864312a(12) =7194850761a(13) =24957519216a(14) =83064794746a(15) =266299577040a(16) =825106028411