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Search: id:A059868
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A059868 There exist no palindromic pentagonals of length n. +0
5
3, 9, 11, 12, 24 (list; graph; listen)
OFFSET

1,1

LINKS

P. De Geest, Palindromic pentagonals

CROSSREFS

Cf. A034822, A059869, A059870, A034307, A000326, A028386, A002069.

Adjacent sequences: A059865 A059866 A059867 this_sequence A059869 A059870 A059871

Sequence in context: A025538 A070354 A074261 this_sequence A101735 A101620 A116444

KEYWORD

nonn,base,hard

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Feb 15 2000.

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Last modified November 7 16:45 EST 2009. Contains 166093 sequences.


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