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A060874 Intrinsic 4-palindromes: n is an intrinsic k-palindrome if it is a k-digit palindrome in some base. 1
9, 15, 28, 40, 52, 56, 65, 68, 80, 85, 105, 125, 126, 130, 150, 156, 170, 186, 190, 195, 215, 216, 217, 235, 246, 252, 255, 259, 282, 301, 312, 342, 343, 344, 372, 378, 385, 400, 408, 427, 434, 438, 456, 468, 476, 498, 504, 512, 513, 518, 534 (list; graph; refs; listen; history; 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

A. J. Di Scala and M. Sombra, Intrinsic Palindromic Numbers

CROSSREFS

Cf. A060873-A060879, A060947-A060949.

Sequence in context: A164385 A046353 A046356 * A147511 A124580 A103508

Adjacent sequences:  A060871 A060872 A060873 * A060875 A060876 A060877

KEYWORD

nonn

AUTHOR

Harvey P. Dale (hpd1(AT)nyu.edu), May 05 2001

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Last modified February 14 01:35 EST 2012. Contains 205567 sequences.