a(n) = Product_{i=0..8} floor((n+i)/9).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =1a(10) =2a(11) =4a(12) =8a(13) =16a(14) =32a(15) =64a(16) =128a(17) =256a(18) =512a(19) =768a(20) =1152a(21) =1728a(22) =2592a(23) =3888a(24) =5832a(25) =8748a(26) =13122a(27) =19683a(28) =26244a(29) =34992