Each term is a square or triangular number. In the context of the sequence of square numbers, the first term is the first square number, the second term is the second square number and so on.
Chat with our AI personalities
In the complex field, every number is a square so there are no numbers that are not squares. If the domain is reduced to that of real numbers, any negative number is not a square. However, the term "square numbers" (not number's!) is often used to refer to perfect square numbers. These are numbers that are squares of integers. Therefore the squares of fractions or irrational numbers are non-squares.
Complex numbers are numbers of the a + bi where a and b are real number and i is the imaginary square root of -1.
(n^2+n)/2
The Nth term for a triangle number is: 0.5n(n+1)
A triangle is a 3 sided polygon