A085109 Palindromes with more than 3 digits in which the absolute difference of a pair of successive digits is identical.

1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, 10101, 11111, 12121, 12321, 13131, 13531, 14141, 14741, 15151, 15951, 16161, 17171, 18181, 19191, 20202, 21012, 21212, 22222, 23232, 23432, 24242, 24642, 25252, 25852, 26262, 27272

Offset

1,1

Comments

All the palindromes up to 999 are trivial members of this sequence except for the condition they do not have more than three digits.

Links

David A. Corneth, Table of n, a(n) for n = 1..10000

Example

10101 is in the sequence as every consecutive pair (u, v) has |u-v| = c for some constant c. - David A. Corneth, Apr 02 2021

Crossrefs

Cf. A002113.

Sequence in context: A176670 A072434 A033285 * A346000 A074843 A175464

Adjacent sequences: A085106 A085107 A085108 * A085110 A085111 A085112

Keyword

nonn,base,easy

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 04 2003

Extensions

More terms from David Wasserman, Jan 27 2005

Status

approved