

A116147


Numbers k such that k concatenated with k2 gives the product of two numbers which differ by 9.


9




OFFSET

1,1


COMMENTS

Also, numbers k such that k concatenated with k+6 gives the product of two numbers which differ by 7.


LINKS

Table of n, a(n) for n=1..4.


EXAMPLE

4962//4960 = 7040 * 7049, where // denotes concatenation.


CROSSREFS

Cf. A116140, A116146, A116153, A116278.
Cf. A116195, A116200, A116202, A116209, A116332.
Sequence in context: A251847 A225718 A228302 * A233630 A254696 A203064
Adjacent sequences: A116144 A116145 A116146 * A116148 A116149 A116150


KEYWORD

nonn,base


AUTHOR

Giovanni Resta, Feb 06 2006


EXTENSIONS

Edited by N. J. A. Sloane at the suggestion of Eric Desbiaux, Mar 23 2008


STATUS

approved



