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A034307 Numbers n such that there are no palindromic pronic numbers of length n. 6
2, 5, 9, 12, 18, 20, 30, 34 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

P. De Geest, Palindromic pronic numbers of the form n(n+1)

CROSSREFS

Cf. A002378, A028336, A028337.

Sequence in context: A086343 A056549 A034806 * A070828 A112988 A218706

Adjacent sequences:  A034304 A034305 A034306 * A034308 A034309 A034310

KEYWORD

nonn,base,hard

AUTHOR

Patrick De Geest, Oct 15 1998.

STATUS

approved

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Last modified June 18 03:02 EDT 2013. Contains 226328 sequences.