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A087305 Smallest n-digit nonpalindromic number such that it and its digit reversal have the same prime signature. +0
1
13, 107, 1002, 10002, 100006, 1000007, 10000013, 100000005, 1000000007, 10000000006, 100000000007, 1000000000006, 10000000000003, 100000000000002, 1000000000000003, 10000000000000002, 100000000000000005 (list; graph; listen)
OFFSET

2,1

EXAMPLE

a(6) = 100006 = 2*13*1613 and 600001 = 19*23*1373 both have prime signature p*q*r, p,q,r are primes.

CROSSREFS

Cf. A085869, A068893.

Sequence in context: A055902 A132261 A142364 this_sequence A038384 A038385 A084901

Adjacent sequences: A087302 A087303 A087304 this_sequence A087306 A087307 A087308

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 02 2003

EXTENSIONS

More terms from David Wasserman (dwasserm(AT)earthlink.net), Apr 19 2005

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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