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A060875 Intrinsic 5-palindromes: n is an intrinsic k-palindrome if it is a k-digit palindrome in some base. 6
17, 21, 27, 31, 82, 91, 100, 112, 121, 130, 142, 151, 160, 164, 173, 182, 194, 203, 212, 224, 233, 242, 257, 273, 289, 305, 325, 341, 357, 373, 393, 409, 425, 441, 461, 477, 493, 509, 514, 530, 546, 562, 582, 598, 614, 626, 630, 650, 651, 666 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All numbers are intrinsic 1- and 2-palindromes, almost all numbers are intrinsic 3-palindromes and very few numbers are intrinsic k-palindromes for k >= 4.

LINKS

Peter Kagey, Table of n, a(n) for n = 1..10000

A. J. Di Scala and M. Sombra, Intrinsic Palindromic Numbers, arXiv:math/0105022 [math.GM], 2001.

A. J. Di Scala and M. Sombra, Intrinsic Palindromes, Fib. Quart. 42, no. 1, Feb. 2004, pp. 76-81.

CROSSREFS

Cf. A060873, A060874, A060876, A060877, A060878, A060879, A060947, A060948, A060949.

Sequence in context: A282109 A128546 A188200 * A259555 A138600 A050845

Adjacent sequences:  A060872 A060873 A060874 * A060876 A060877 A060878

KEYWORD

nonn,base

AUTHOR

Harvey P. Dale, May 05 2001

STATUS

approved

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Last modified February 15 20:32 EST 2019. Contains 320138 sequences. (Running on oeis4.)