A116258 Numbers k such that k*(k+9) gives the concatenation of two numbers m and m-5.

8444, 8809, 69125298546226023970, 69855225553525294043, 74604750601020544518, 75334677608319814591, 92496418993920707745, 93226346001219977818, 97975871048715228293, 98705798056014498366

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Example

8809 * 8818 = 7767//7762, where // denotes concatenation.

Crossrefs

Cf. A116180, A116245, A116257, A116264.

Sequence in context: A208182 A093221 A023321 * A116311 A116351 A253147

Adjacent sequences: A116255 A116256 A116257 * A116259 A116260 A116261

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved