Floyd's Triangle

Floyd's Triangle is a right angled triangular array of natural numbers. It is named after Robert Floyd. It is defined by filling the rows of the triangle with consecutive numbers, starting with a 1 in the top left corner:

1

2 3

4 5 6

7 8 9 10

11 12 13 14 15

The numbers along the right edge of the triangle are the triangular numbers.

See also

* Pascal's triangle

Number Theory