Ring Nb.

Lantern

Kite 1 + 2

Häusle

Sum

k = 1

7

0

0

7

k = 2

0

7 + 7

0

14

k = 3

0

7 + 7

7

21

k = 4

0

7 + 7

14

28

k = 5

0

7 + 7

21

35

k = 6

0

7 + 7

28

42

$⋮$

$⋮$

$⋮$

$⋮$

$⋮$

k ≥ 2

0

7 + 7

7(k − 2)

7k