# a(n) is the smallest Carmichael number that is palindromic in base n. a(2) = 561 a(3) = ? a(4) = 1105 a(5) = 399001 a(6) = 46657 a(7) = ? a(8) = 104607266401 a(9) = ? a(10) = 101101 a(11) = 117933555719486641 a(12) = 1729 a(13) = ? a(14) = 1701016801 a(15) = ? a(16) = 6030849889
