Sequence and recognising patterns simple $n^(th)$ term

There are certain sequences or patterns you should know the $n^(th)$ term of.

Even numbers 2, 4, 6, 8, 10, 12................ $n^(th)\ \ term=2n$

To learn this section - go to "Sequence pattern 1"

Odd numbers 1, 3, 5, 7, 9, 11 ................. $n^(th)\ \ term=2n-1$

To learn this section - go to "Sequence pattern 1"

Square numbers 1, 4, 9, 16, 25, 36 ..........(..................................) $n^(th)\ \ term=n^2$

To learn this, see section - Quadratics and sequences.

Cube numbers and sequence.

$1$	$8$	$27$	$64$	$125$	....... $n^(th)\ \ term=n^3$
	$(2xx2xx2)$	$(3xx3xx3)$	$(4xx4xx4)$	$(5xx5xx5)$

Triangular numbers 1, 3, 6, 10, 15 ........ $n^(th)\ \ term=1/2n(n+1)$

To learn this section, see triangles & sequences.

Prime numbers 2, 3, 5, 7, 11, 13 No known formula.

Fibonacci numbers 1, 1, 2, 3, 5, 8, 13 Add the two numbers before it.

(there is a formula but way above this level.)

Sequence and recognising patterns simple nthn^(th) term