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A086883 Numbers n such that the decimal expansion of 1/n is nonterminating and contains arbitrarily long palindromic substrings. 0
3, 6, 9, 11, 12, 15, 18, 22, 24, 30, 33, 36, 44, 45, 48, 55, 60, 66, 72, 75, 88, 90, 91, 96, 99, 101, 110, 111, 120, 132, 137, 144, 150, 165, 176, 180, 182, 192, 198, 220, 225, 240, 264, 273, 275, 288, 300, 303, 330, 333, 352, 360, 364, 375, 384, 396, 440, 444 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

If n is a member, then 2n and 5n are usually also members; however, 2*101 and 5*91 are not members.

LINKS

Table of n, a(n) for n=1..58.

EXAMPLE

91 is a member because 1/91 contains the palindromes 010, 010989010, 010989010989010, etc.

CROSSREFS

Sequence in context: A230193 A201462 A189302 * A154777 A338432 A288821

Adjacent sequences:  A086880 A086881 A086882 * A086884 A086885 A086886

KEYWORD

base,nonn

AUTHOR

Donald S. McDonald, Aug 22 2003

EXTENSIONS

Edited and extended by David Wasserman, Jan 19 2006

STATUS

approved

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Last modified June 18 17:32 EDT 2021. Contains 345120 sequences. (Running on oeis4.)