Function to split 1 to N into two subsequences with non - coprime sums
public static void printSubsequence ( int N ) { Console . Write ( " { ▁ " ) ; for ( int i = 1 ; i < N - 1 ; i ++ ) { Console . Write ( i + " , ▁ " ) ; } Console . WriteLine ( N - 1 + " ▁ } " ) ; Console . Write ( " { ▁ " + N + " ▁ } " ) ; }