V dif = s -> enumerate(s[1..]).map2((i, x) -> x - @s[i])
F difn(s, n) -> [Int]
   R I n != 0 {difn(dif(s), n - 1)} E s

V s = [90, 47, 58, 29, 22, 32, 55, 5, 55, 73]

L(i) 10
   print(difn(s, i))