A102567 = A106498

[franktaw at netscape.net]

A116148 (n concatenated with n-1 gives the product of two numbers which 
differ by 2) is also a duplicate of these two.  The only possible 
exceptions would be numbers of the form 10^n-1; but then the 
concatenation is 10^{2n}+10^n-1, and 10^{2n}+10^n is never a square.

Franklin T. Adams-Watters


-----Original Message-----
From: davidwwilson at comcast.net

A102567 and A106498 are duplicates and should be merged. The latter 
sequence has an associated b-file.




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