A116302 Numbers k such that k*(k+3) gives the concatenation of two numbers m and m+2.

27, 71, 79822844, 69852478553064869297984899963806, 77473062193002372448027740546438, 77747359197583788609974143907618, 84341826458653210947638195982114, 85367942837521291760016984490250

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

79822844 * 79822847 = 63716866//63716868, where // denotes concatenation.

Crossrefs

Cf. A116171, A116296, A116301, A116303, A116309.

Sequence in context: A116353 A224525 A219130 * A181976 A039414 A043237

Adjacent sequences: A116299 A116300 A116301 * A116303 A116304 A116305

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved