import std.stdio, std.string, std.conv, std.range, std.array, std.algorithm;
import std.uni, std.math, std.container, std.typecons, std.typetuple;
import core.bitop, std.datetime;

immutable long mod = 10^^9 + 7;

void main(){
    long N;
    readVars(N);

    long ans = 1;

    foreach(i;0 .. N){
        (ans *= (N - i)) %= mod;
        (ans *= (2*N - (2*i + 1))) %= mod;
    }

    writeln(ans);
}


void readVars(T...)(auto ref T args){
    auto line = readln.split;
    foreach(ref arg ; args){
        arg = line.front.to!(typeof(arg));
        line.popFront;
    }
    if(!line.empty){
        throw new Exception("args num < input num");
    }
}