#include <bits/stdc++.h>
using namespace std;

#include <atcoder/modint>
using mint = atcoder::modint998244353;
void operator<<(ostream& os, const mint& m) { os << m.val(); }

#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  int n, m, k;
  cin >> n >> m >> k;
  vector dp(m, vector<mint>(1 << n));
  rep(i, 1 << n) if (popcount(ull(i)) >= k) dp[0][i] = 1;
  rep(i, m - 1) {
    rep(prevbit, 1 << n) {
      rep(nextbit, 1 << n) {
        if (popcount(ull(nextbit)) < k) continue;
        if (popcount(ull(prevbit & nextbit)) < k) continue;
        dp[i + 1][nextbit] += dp[i][prevbit];
      }
    }
  }
  Debug(dp);
  mint ans = 0;
  rep(i, 1 << n) ans += dp[m - 1][i];
  cout << ans.val() << endl;
  return 0;
}