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A116259 n times n+3 gives the concatenation of two numbers m and m-4. 4
7282817, 8171727, 4550754022124826466, 5449245977875173532, 8176518705147900805, 8951999555715882882349355522888, 9861090464806791973258446431979 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

8171727 * 8171730 = 6677714//6677710, where // denotes

concatenation.

CROSSREFS

Cf. A116128, A116253, A116260, A116274.

Sequence in context: A157378 A251356 A116236 * A158256 A306873 A269220

Adjacent sequences:  A116256 A116257 A116258 * A116260 A116261 A116262

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified June 23 13:59 EDT 2021. Contains 345402 sequences. (Running on oeis4.)