Numbers that when multiplied by the product of their nonzero digits produce a square.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =18a(10) =45a(11) =49a(12) =96a(13) =98a(14) =100a(15) =135a(16) =144a(17) =200a(18) =250a(19) =288a(20) =289a(21) =300a(22) =338a(23) =378a(24) =384a(25) =400a(26) =405a(27) =441a(28) =500a(29) =600