Pattern Possibilities

From: inkexit@xxxxxxxxx
Date: Wed, 15 Aug 2007 11:16:32 -0700

Ink an 8" x 8" grid on 95 pieces of paper. Check one square out of
the 64 squares of the grid with pencil, or leave the grid blank. Do
this for all 95 pieces of paper.
Erase all checks. Repeat.

How many different patterns of check placement can you create before
repeating yourself?

.

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