pentagonalnumberlist
nounUK /pɛnˈtæɡənəl ˈnʌmbə lɪst/
US /pɛnˈtæɡənəl ˈnʌmbər lɪst/
A pentagonal number list is a list of numbers that can be drawn as dots in a five-sided shape.
Our teacher showed us a pentagonal number list starting with 1, 5, 12, and 22.
OTHER MEANINGS
2. A printed or digital table of pentagonal numbers used for quick reference in math class.
She checked the pentagonal number list to find the tenth pentagonal number.
3. A sequence of pentagonal numbers written in order from smallest to largest.
The pentagonal number list grows by adding 4, 7, 10, and so on.
4. A set of pentagonal numbers highlighted in a puzzle or game.
The puzzle asked us to mark every number from the pentagonal number list on the grid.