A116167 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A116167

Numbers k such that k concatenated with k+1 gives the product of two numbers which differ by 7.

7, 493, 607, 629, 757, 17927, 33247, 93869, 19467217, 31223879, 72757727, 13454739732766891651472740499, 40093333713615672956030023507, 48089152118689474641229584727, 66424317743191484432891678269

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

72757727//72757728 = 85298137 * 85298144, where // denotes concatenation.

CROSSREFS

Cf. A116160, A115428, A116168, A116180, A116298.

Sequence in context: A119621 A142734 A120773 * A296175 A319831 A122523

Adjacent sequences: A116164 A116165 A116166 * A116168 A116169 A116170

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved