A116140 Numbers k such that k concatenated with k-3 gives the product of two numbers which differ by 9.

5, 7403, 8885, 12563, 41675, 54239, 2353623, 2650793, 7717533, 527390351115, 567933643889, 627121279653, 671264212463, 1335723019653517755, 2049430589972661489, 2995303155542192885, 4026214090447622723

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Example

7717533//7717530 = 8784945 * 8784954, where // denotes concatenation.

Crossrefs

Cf. A116133, A116139, A116147, A116271.

Sequence in context: A202156 A117711 A203689 * A243235 A145530 A067816

Adjacent sequences: A116137 A116138 A116139 * A116141 A116142 A116143

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved