G.f.: q*Product_{k>0} (1-q^(12k))(1+q^(12k-1))(1+q^(12k-11))/(1-q^k).

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =8a(5) =12a(6) =18a(7) =26a(8) =37a(9) =52a(10) =72a(11) =99a(12) =134a(13) =180a(14) =240a(15) =317a(16) =416a(17) =542a(18) =702a(19) =904a(20) =1158a(21) =1476a(22) =1872a(23) =2364a(24) =2973a(25) =3724a(26) =4647a(27) =5778a(28) =7160a(29) =8844