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A084992

Palindromes such that the difference between the consecutive terms are palindromes and this has not been the difference of any two consecutive terms earlier.

1, 2, 4, 7, 11, 22, 44, 77, 121, 222, 333, 454, 585, 787, 999, 1221, 2222, 3333, 4554, 5885, 7887, 9999, 12221

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..23.

EXAMPLE

E.g. 1221-999 = 222 and 222 is a palindrome and this has not been the difference of any two consecutive terms earlier.

CROSSREFS

Sequence in context: A293684 A332274 A071250 * A360886 A304040 A261145

Adjacent sequences: A084989 A084990 A084991 * A084993 A084994 A084995

KEYWORD

nonn,base

AUTHOR

Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 30 2003

STATUS

approved