

A083158


Palindromes which are the arithmetic mean of two distinct palindromes.


1



2, 3, 4, 5, 6, 7, 8, 9, 22, 33, 44, 55, 66, 77, 88, 99, 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 202, 212, 222, 232, 242, 252, 262, 272, 282, 292, 303, 313, 323, 333, 343, 353, 363, 373, 383, 393, 404, 414, 424, 434, 444, 454, 464, 474, 484, 494, 505
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

99 = (121+77)/2 is a member but 11 is not a member.
191 is in the sequence since it is the arithmetic mean of two distinct palindromes, 9 and 373.


CROSSREFS



KEYWORD

base,easy,nonn


AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003


EXTENSIONS



STATUS

approved



