Different squares on an n X n lattice

[Pfoertner, Hugo]

-----Original Message-----
From: David Wilson [mailto:davidwwilson at comcast.net] 
Sent: Tuesday, June 07, 2005 12:34
To: Pfoertner, Hugo; Sequence Fans
Subject: Re: Different squares on an n X n lattice


I recommend these modifications.  Please review:

[...]

A002415, A0024206 changes look fine to me.

Add:

%S A108279 
1,3,5,8,11,15,18,23,28,33,38,45,51,58,65,73,80,89,97,107,116,126,134,146,
....
%N A108279 a(n) = number of squares with corners on an n X n grid, distinct 
up to congruence.
%Y A108279 See A002415, A024206.
%O A108279 1,3

I don't understand the proposed offset. The first term describes the 2 X 2
grid, which forms 1 square. Offset should therefore be 2.

Hugo Pfoertner