from collections import defaultdict
from fractions import Fraction

K, N = map(int, input().split())
dp = defaultdict(int)
dp[(0, 1)] = 1
for i in range(K):
	ndp = defaultdict(int)
	for j, c in dp.items():
		for k in range(1, N + 1):
			f = Fraction(j[0], j[1]) + Fraction(1, k)
			if f > 1:
				continue
			ndp[(f.numerator, f.denominator)] += c
	dp = ndp
print(dp[(1, 1)])