matek feladat

1 + 4 = 5, 5 + 2 + 5 = 12, 12 + 3 + 6 = 21, 21 + 8 + 11 = 40, második: 1 + (4 × 1) = 5, 2 + (5 × 2) = 12, 3 + (6 × 3) = 21, 8 + (8 × 11) = 96