Biquadrateful (i.e., not biquadrate-free) palindromes.

Terms

a(0) =272a(1) =464a(2) =656a(3) =848a(4) =2112a(5) =2992a(6) =4224a(7) =6336a(8) =8448a(9) =14641a(10) =21312a(11) =21712a(12) =23232a(13) =23632a(14) =25152a(15) =25552a(16) =25952a(17) =27072a(18) =27472a(19) =27872a(20) =29392a(21) =29792a(22) =31213a(23) =40304a(24) =40704a(25) =42224a(26) =42624a(27) =44144a(28) =44544a(29) =44944