Save guides, add subjects and pick up where you left off with your BBC account. You will need to be confident with arithmetic sequences and the 𝑛th term rule to understand these other types of ...

If the nth term of a sequence is known, it is possible to work out any number in that sequence. Write the first five terms of the sequence \(3n + 4\). \(n\) represents the position in the sequence.

Several papers have investigated sequences which have no k-term arithmetic progressions, finding bounds on their density and looking at sequences generated by greedy algorithms. Rankin in 1960 ...