a(1) = 1; a palindrome is included in the sequence if it has a prime signature that is different from all previous terms.
A083433
a(1) = 1; a palindrome is included in the sequence if it has a prime signature that is different from all previous terms.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =6a(4) =8a(5) =44a(6) =66a(7) =88a(8) =252a(9) =272a(10) =414a(11) =484a(12) =616a(13) =858a(14) =2112a(15) =2772a(16) =2992a(17) =4004a(18) =4224a(19) =6006a(20) =6336a(21) =6776a(22) =8008a(23) =8448a(24) =14641a(25) =25952a(26) =27872a(27) =27972a(28) =29592a(29) =29792
External references
- oeis: A083433