"Eureka!" (1,4,2)

(Other definitions for aha that I've seen before include "I'm surprised" , "I get it!" , "I've got it!" , "Exclamation of triumph or surprise, a palindrome" , "Exclamation of triumph or mockery, a palindrome" .)
(Other definitions for aha that I've seen before include "I'm surprised" , "I get it!" , "I've got it!" , "Exclamation of triumph or surprise, a palindrome" , "Exclamation of triumph or mockery, a palindrome" .)