Palindromes such that sum of digits equals product of digits.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =22a(10) =12221a(11) =13131a(12) =21212a(13) =31113a(14) =1111441111a(15) =1114114111a(16) =1141111411a(17) =1411111141a(18) =4111111114a(19) =11112421111a(20) =11121412111a(21) =11211411211a(22) =12111411121a(23) =21111411112a(24) =111122221111a(25) =111212212111a(26) =111221122111a(27) =112112211211a(28) =112121121211