Number Spirals
See the patterns that underly algebra

The numbers in the rectangular grid are either increasing by rows, or arranged in a spiral from the centre.

Choose or enter a function (using numbers, the pronumeral n, operators +, -, *, / and brackets), and view the numbers or the patterns that result.

Zoom out to see more numbers or a larger pattern (zoom is continuous if you keep the button pressed), and press and hold on the image to magnify.

2 × 2


Select Function: 2n (even numbers) n (n - 1) (product of
consecutive numbers)
2n - 1 (odd numbers) 4n2 + n Enter expression in n
n2 (perfect squares) 4n2 - n