Smallest palindrome with exactly n prime factors (counted with multiplicity).

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =88a(5) =252a(6) =2772a(7) =27872a(8) =2112a(9) =4224a(10) =8448a(11) =44544a(12) =48384a(13) =2977792a(14) =27011072a(15) =405504a(16) =4091904a(17) =441606144a(18) =405909504a(19) =886898688a(20) =677707776a(21) =4285005824a(22) =276486684672a(23) =21128282112a(24) =633498894336a(27) =29142024192