Computers and Technology, 07.04.2020 17:28 ethanmel21

A pentagonal number is defined as n(3n – 1)/2 for n=1,2,..., and so on. Therefore, the first few numbersare 1,5,12,22,... . Write a method with the following header that returns a pentagonal number:public static int getPentagonalNumber(int n)
Using Java, write a test program that uses this method to display the first n pentagonal
numbers with 10 numbers on each line, one space between each number, and the user entering the integer value for n.

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A pentagonal number is defined as n(3n – 1)/2 for n=1,2,..., and so on. Therefore, the first few num...

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