login
A116113
Numbers k such that k concatenated with k-7 gives the product of two numbers which differ by 8.
5
95, 216, 287, 515, 675, 995, 1175, 4320, 9995, 82640, 99995, 960795, 999995, 1322312, 4049591, 9999995, 16955015, 34602080, 99999995, 171010235, 181964891, 183673467, 187160072, 321920055, 326530616, 328818032
OFFSET
1,1
EXAMPLE
8533818720//8533818713 = 9237867023 * 9237867031, where // denotes concatenation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved