import integers.choose

def B( n ) = sum( 1/(k + 1)*sum((if 2|r then 1 else -1)*choose(k, r)*(r^n) | r <- 0..k) | k <- 0..n )

for i <- 0..60 if i == 1 or 2|i
  printf( "B(%2d) = %s\n", i, B(i) )