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A083155 a(1) = 9, a(n) = smallest nontrivial palindromic multiple of a(n-1). a(n) is not equal to a(n-1) or a concatenation of a(n-1) with itself. 5
9, 171, 1881, 171171, 1882881, 306909603, 11355655311, 1033364633301, 1034397997934301, 10241574577547514201, 10231343244544544234313201, 112544775689989986577445211, 1023144555797698967975554413201, 102221350448336861989168633844053122201, 11233003103852144358833233885344125830130033211 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Variant of A068668. [From R. J. Mathar, Dec 15 2008]
LINKS
P. De Geest, WONplate 36
CROSSREFS
Sequence in context: A121476 A121477 A055407 * A229127 A358620 A358959
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003
EXTENSIONS
Corrected and extended by Patrick De Geest, Jun 05 2003
a(14)-a(15) from Giovanni Resta, Sep 25 2019
STATUS
approved

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Last modified April 20 12:36 EDT 2024. Contains 371844 sequences. (Running on oeis4.)