ROSECODE 023
Divisible Hexagons
A hexagonal number is computed as follows using the formula:
H(n) = n(2n-1)
As shown, the first 5 hexagonal numbers are:
1 6 15 28 45
How many of the first 100,000,000 hexagonal numbers are divisible by all the numbers from 1 through 15?
H(n) = n(2n-1)
As shown, the first 5 hexagonal numbers are:
1 6 15 28 45
How many of the first 100,000,000 hexagonal numbers are divisible by all the numbers from 1 through 15?