What is Tetrahedral Number?
1.
The {n}th tetrahedral number is the sum of the first n Triangular numbers. Triangular numbers are the sum of the first n integers (1, 3, 6, 10, 15, etc.), and taking the sum of the triangular numbers results in the tetrahedral numbers (1, 4, 10, 20, 35, etc.)
The fifth tetrahedral number is the sum of the first five triangular numbers. The first five triangular numbers are 1, 3=1+2, 6=1+2+3, 10=1+2+3+4, and 15=1+2+3+4+5, so the sum of these numbers is 1+3+6+10+15= 35.
See
Random Words:
1.
A supernatural creature that can dance and sing. It looks like a banana peel. It is found dancing on breakfast foods such as pancakes, w..
1.
A person who wishes Islam to dominate the world, by any and all means necessary. Synonymous with Muslim.
He was a moderate muslimperial..
1.
To drown, originating from former Detroit Lion Corey Smith who's boat capsized and was drowned out at sea
Make sure the kids are w..
