N,M,K=map(int, input().split())
mod=998244353
dp=[1]*(2**N)
def popcnt(n):
  c = (n & 0x5555555555555555) + ((n >> 1) & 0x5555555555555555)
  c = (c & 0x3333333333333333) + ((c >> 2) & 0x3333333333333333)
  c = (c & 0x0f0f0f0f0f0f0f0f) + ((c >> 4) & 0x0f0f0f0f0f0f0f0f)
  c = (c & 0x00ff00ff00ff00ff) + ((c >> 8) & 0x00ff00ff00ff00ff)
  c = (c & 0x0000ffff0000ffff) + ((c >> 16) & 0x0000ffff0000ffff)
  c = (c & 0x00000000ffffffff) + ((c >> 32) & 0x00000000ffffffff)
  return c

for _ in range(M-1):
  ndp=[0]*(2**N)
  for i in range(2**N):
    for j in range(2**N):
      nex=i&j
      if popcnt(nex)>=K:
        ndp[j]+=dp[i]
        ndp[j]%=mod 
  dp=ndp 
print(sum(dp)%mod)