1,1
Each number becomes a palindrome by changing three digits.
Sequence in context: A031958 A056027 A072585 this_sequence A144798 A066473 A031409
Adjacent sequences: A050871 A050872 A050873 this_sequence A050875 A050876 A050877
nonn,base
Clark Kimberling (ck6(AT)evansville.edu)
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