Lucky numbers for which the product of the digits is also a lucky number.

Terms

a(0) =1a(1) =3a(2) =7a(3) =9a(4) =13a(5) =31a(6) =33a(7) =37a(8) =73a(9) =79a(10) =111a(11) =133a(12) =135a(13) =171a(14) =331a(15) =357a(16) =535a(17) =537a(18) =553a(19) =717a(20) =735a(21) =739a(22) =937a(23) =1117a(24) =1155a(25) =1179a(26) =1197a(27) =1357a(28) =1395a(29) =1711