OFFSET
1,1
COMMENTS
Also numbers n such that n concatenated with n-2 gives the product of two numbers which differ by 5.
EXAMPLE
63716866//63716864 = 79822843 * 79822848, where // denotes concatenation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
EXTENSIONS
Edited by N. J. A. Sloane, Apr 15 2007
STATUS
approved