Product of nonzero digits of A066555(n).

Terms

a(0) =2a(1) =24a(2) =8a(3) =8a(4) =96a(5) =64a(6) =1728a(7) =20736a(8) =491520a(9) =1440000a(10) =3483648a(11) =118013952a(12) =5159780352a(13) =3456a(14) =384a(15) =36864a(16) =186624a(17) =15728640a(18) =17280000a(19) =796594176a(20) =38050725888a(21) =161243136a(22) =9437184a(23) =1019215872a(24) =724775731200