A116207 Numbers k such that k concatenated with k+7 gives the product of two numbers which differ by 5.

493, 607, 629, 757, 17927, 33247, 93869, 19467217, 31223879, 72757727, 13454739732766891651472740499, 40093333713615672956030023507, 48089152118689474641229584727, 66424317743191484432891678269

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Example

72757727//72757734 = 85298138 * 85298143, where // denotes concatenation.

Crossrefs

Cf. A116167, A116114, A116200, A116173, A116208, A116180, A116338.

Sequence in context: A198531 A300058 A251540 * A363391 A264327 A045007

Adjacent sequences: A116204 A116205 A116206 * A116208 A116209 A116210

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved