N = gets.to_i

# 10^0: 0
# 10^1: 10
# 10^2: 55 x5.5 # 11/2
# 10^3: 220 x4 # 12/3
# 10^4: 715 x3.25 # 13/4
# 10^5: 2002 x2.8 # 14/5
# 10^6: 5005 x2.5 # 15/6
# 10^7: 11440 x2.28571428... # 16/7

ans = 10
(2..N).each{|i|
  ans = ans * (i+9) / i
  ans
}
p ans % (10**9 + 7)