There exists some k>0 such that n is the product of (k + digits of n).

Terms

a(0) =12a(1) =18a(2) =24a(3) =35a(4) =50a(5) =56a(6) =90a(7) =120a(8) =210a(9) =315a(10) =450a(11) =780a(12) =840a(13) =1500a(14) =3920a(15) =4320a(16) =4752a(17) =7744a(18) =16500a(19) =24960a(20) =57915a(21) =59400a(22) =60480a(23) =91728a(24) =269500a(25) =493920a(26) =917280a(27) =1293600a(28) =2419200a(29) =3386880