For the bonus marks
It works for all natural numbers, apart from the number 1 and any number which is a power of 2.
Power's of 2 have no odd factors, it will be impossible to make 2 or more consecutive numbers add up to any natural number without the use of an odd number.
The formula to work out the numbers which can be written as the sum of two or more consecutive non-negative integers (the nth term).
2n + 1 = n + (n + 1)
It works for all natural numbers, apart from the number 1 and any number which is a power of 2.
Power's of 2 have no odd factors, it will be impossible to make 2 or more consecutive numbers add up to any natural number without the use of an odd number.
The formula to work out the numbers which can be written as the sum of two or more consecutive non-negative integers (the nth term).
2n + 1 = n + (n + 1)