Icosikaipentagon Number | C ++ program to find the N - th Icosikaipentagon Number ; Function to find the N - th icosikaipentagon Number ; Driver code
#include <bits/stdc++.h> NEW_LINE using namespace std ; int icosikaipentagonNum ( int N ) { return ( 23 * N * N - 21 * N ) / 2 ; } int main ( ) { int n = 3 ; cout << "3rd ▁ icosikaipentagon ▁ Number ▁ is ▁ " << icosikaipentagonNum ( n ) ; return 0 ; }