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sequences
Posted:
Apr 2, 1998 10:58 PM


An nxn multiplication table contains n squared entries. How many of these entries are even numbers? Assume the table begins at 1x1. For example, 1x1 has no even numbers, therefore 0 entries, 2x2 has 3 even numbers, 3x3 has 5 even numbers, 4x4 has 12 even numbers, 5x5 has 16 even numbers, 6x6 has 27 even numbers...... What would be the equation for nxn if n were any whole number, how many even numbers to that n entry?



