Matrix 9th power of partition triangle A008284.

Terms

a(0) =1a(1) =9a(2) =1a(3) =45a(4) =9a(5) =1a(6) =201a(7) =54a(8) =9a(9) =1a(10) =735a(11) =246a(12) =54a(13) =9a(14) =1a(15) =2517a(16) =981a(17) =255a(18) =54a(19) =9a(20) =1a(21) =7785a(22) =3453a(23) =1026a(24) =255a(25) =54a(26) =9a(27) =1a(28) =22857a(29) =11238