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A116238 Numbers n such that n times n+7 gives the concatenation of two numbers m and m-8. 5
69, 79822842, 69852478553064869297984899963804, 77473062193002372448027740546436, 77747359197583788609974143907616, 84341826458653210947638195982112, 85367942837521291760016984490248 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

79822842 * 79822849 = 63716866//63716858, where // denotes concatenation.

CROSSREFS

Cf. A116107, A116230, A116237, A116239, A116243.

Sequence in context: A211212 A175049 A116099 * A136114 A278074 A075405

Adjacent sequences:  A116235 A116236 A116237 * A116239 A116240 A116241

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified June 26 00:39 EDT 2019. Contains 324367 sequences. (Running on oeis4.)