A116238 Numbers k such that k*(k+7) gives the concatenation of two numbers m and m-8.

69, 79822842, 69852478553064869297984899963804, 77473062193002372448027740546436, 77747359197583788609974143907616, 84341826458653210947638195982112, 85367942837521291760016984490248

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 A365913 A278074

Adjacent sequences: A116235 A116236 A116237 * A116239 A116240 A116241

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved