N,M,K = map(int,input().split())
MOD = 998244353

if N==1:
    print(M)
    exit()

mat = [[int(abs(M//(i+1) - M//(j+1)) <= K) for j in range(M)] for i in range(M)]

def mul(l,r):
    ret = [[0]*M for _ in range(M)]
    for i,row in enumerate(l):
        for j,col in enumerate(zip(*r)):
            ret[i][j] = sum(a*b for a,b in zip(row,col)) % MOD
    return ret

X = mat
Z = [[int(i==j) for j in range(M)] for i in range(M)]
N -= 1
while N:
    if N%2:
        Z = mul(Z,X)
    X = mul(X,X)
    N //= 2

print(sum(sum(row)%MOD for row in Z)%MOD)