import sys
import numpy as np

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

MOD = 1_000_000_007

def main(N, K):
    NN = N * 2
    A = np.zeros(NN, np.int64)
    # 全部マイナスに進んだ場合の場所
    shift = (1 - pow(2, K, NN)) % NN
    # そこから、0, 2, 4, ..., 2^{K+1}-2 まで足せる
    # q, r = divmod(pow(2,K), NN)
    q, r = divmod(pow(2, K, N * MOD), N)
    A[:2 * r:2] += 1
    A[::2] += q
    A = np.roll(A, shift)
    # 全確率でわる
    x = np.sum(A) % MOD
    A *= pow(int(x), -1, MOD)
    A = A[:N] + A[N:]
    return A % MOD

N, K = map(int, read().split())
ans = main(N, K)
print('\n'.join(map(str, ans.tolist())))