Please write a Python program.

6.1 (Math: pentagonal numbers) A pentagonal number is defined as n(3n 1)/2 for n = 1, 2, , and so on. So, the first few numbers are 1, 5, 12, 22, write a function with the following header that returns a pentagonal number: def getPentagonalNumber(n): Write a test program that uses this function to display the first 100 pentagonal numbers with 10 numbers on each line