Question: 6.1 (Math: pentagonal numbers) A pentagonal number is defined as n(3ni-1)2 for n 1,2,..., and so on. Therefore, the first few numbers are 1,5, 12,22

6.1 (Math: pentagonal numbers) A pentagonal number is defined as n(3ni-1)2 for n 1,2,..., and so on. Therefore, the first few numbers are 1,5, 12,22 Write a method with the following header that returns a pentagonal number public static int getPentagonalNumber(int n) Write a test program that uses this method to display the first 100 pentagonal numbers with 10 numbers on each line

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