Centered hexagonal number | Java Program to find nth centered hexadecimal number ; Function to find centered hexadecimal number ; Formula to calculate nth centered hexadecimal number and return it into main function ; Driver Code
import java . io . * ; class GFG { static int centeredHexagonalNumber ( int n ) { return 3 * n * ( n - 1 ) + 1 ; } public static void main ( String args [ ] ) { int n = 10 ; System . out . print ( n + " th ▁ centered ▁ " + " hexagonal ▁ number : ▁ " ) ; System . out . println ( centeredHexagonalNumber ( n ) ) ; } }