Number of 9-regular cubic partitions of n.

Terms

a(0) =1a(1) =1a(2) =3a(3) =4a(4) =9a(5) =12a(6) =23a(7) =31a(8) =54a(9) =72a(10) =117a(11) =156a(12) =242a(13) =320a(14) =477a(15) =628a(16) =909a(17) =1188a(18) =1676a(19) =2178a(20) =3012a(21) =3888a(22) =5283a(23) =6780a(24) =9079a(25) =11582a(26) =15309a(27) =19424a(28) =25389a(29) =32040