Andrews's shadow difference function D_3(q).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =1a(7) =3a(8) =4a(9) =7a(10) =10a(11) =16a(12) =20a(13) =31a(14) =41a(15) =56a(16) =74a(17) =101a(18) =129a(19) =172a(20) =219a(21) =284a(22) =363a(23) =464a(24) =581a(25) =738a(26) =924a(27) =1155a(28) =1435a(29) =1785