Nonprimes n such that the product of its divisors is a palindrome.

Terms

a(0) =1a(1) =4a(2) =22a(3) =26a(4) =49a(5) =111a(6) =121a(7) =202a(8) =1001a(9) =1111a(10) =2285a(11) =10001a(12) =10201a(13) =11111a(14) =100001a(15) =1000001a(16) =1001001a(17) =1012101a(18) =1100011a(19) =1101011a(20) =1109111a(21) =1111111a(22) =3069307a(23) =10000001a(24) =12028229a(25) =12866669a(26) =100000001a(27) =101000101a(28) =110000011a(29) =110091011