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A116224 Numbers n such that n concatenated with n+9 gives the product of two numbers which differ by 9. 3
23, 27, 10357253, 10577583, 45531191, 45991881, 12823841629508531559818193, 17153953024599261169512903, 34319291138166088695725681, 41203057971387248588060861, 75861857890090990570762781 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

45991881//45991890 = 67817310 * 67817319, where // denotes

concatenation.

CROSSREFS

Cf. A116216, A116223, A116355.

Sequence in context: A178960 A070774 A045806 * A127495 A060703 A061753

Adjacent sequences:  A116221 A116222 A116223 * A116225 A116226 A116227

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006

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Last modified February 17 10:03 EST 2012. Contains 206009 sequences.