Expansion of (1/theta_4 - 1)/2.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =7a(5) =12a(6) =20a(7) =32a(8) =50a(9) =77a(10) =116a(11) =172a(12) =252a(13) =364a(14) =520a(15) =736a(16) =1031a(17) =1432a(18) =1974a(19) =2700a(20) =3668a(21) =4952a(22) =6644a(23) =8864a(24) =11764a(25) =15533a(26) =20412a(27) =26704a(28) =34784a(29) =45124