A116236 n times n+5 gives the concatenation of two numbers m and m-8.
7282816, 8171726, 4550754022124826465, 5449245977875173531, 8176518705147900804, 8951999555715882882349355522887, 9861090464806791973258446431978
Offset: 1
Examples
8171726 * 8171731 = 6677714//6677706, where // denotes concatenation.