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A116272 n times n+1 gives the concatenation of two numbers m and m-2. 4
6, 7282818, 8171728, 4550754022124826467, 5449245977875173533, 8176518705147900806, 8951999555715882882349355522889, 9861090464806791973258446431980 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

8171728 * 8171729 = 6677714//6677712, where // denotes

concatenation.

CROSSREFS

Cf. A116141, A116265, A116273, A116285.

Sequence in context: A182791 A115476 A172876 * A182792 A067484 A193150

Adjacent sequences:  A116269 A116270 A116271 * A116273 A116274 A116275

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 14 03:03 EST 2012. Contains 205567 sequences.